I'm 52, single, three college aged offspring, and my ratios are about 6.5:2.8:1.
It's an excellent question.
What's done is done. You are where you are. So I wouldn't spend too much time worrying about your current ratios. They are now simply an input into your plan for what to do in the future.
What you do in the future, really, comes down mostly to three things I think:
1. What your (taxable) income curve will look like. By this I mean the typical thing for a FIRE-type person here would be increasing income throughout your career, then a lower income period during FIRE, then probably higher income later as SS / pensions / RMDs come on line. Think of a graph of AGI by year for the rest of your life.
2. What your spending curve will look like. This could be driven by college costs, medical expenses, large purchases like a second home, travel. You could plan to spend a lot early, or spend evenly, or spend more as your investments grow, or whatever. If this doesn't line up well with #1, then you'll probably have to have some sort of plan to draw from your savings when your income is low and your spending is high (e.g., you just FIREd and want to do a major home remodel or a world cruise), which may in turn generate taxable income (e.g., you just sold $100K of TSLA to pay for it).
3. Tax rules. Really most of what you do from here on out - to do it well IMHO - will depend on tax rules. You can get lost in the minutiae (I do), but given that tax rules are changed regularly, it's probably silly to do so. If you read, you'll eventually come across most or all of the good tools out there for managing taxes - Roth conversions, 529s, ACA subsidies, HSAs, QCDs.
In the big scheme of things, we have a progressive tax system, and we probably will for a long while to come. So the biggest single thing I think you can do is either defer or accelerate taxation of your income in order to have your income taxed at the low rates and not the high rates. A relatively easy way to do this is to try to figure out what your lifetime tax rates are going to be (by looking at the curves in #1 and #2 above) and then see if you can level out your lifetime tax rate and what that rate will probably be. Suppose, for example, that it's 22%.
Once you know that, you can try to pay taxes / accelerate / recognize income when it looks like your rate will be below that 22% number. This could be things like Roth conversions in FIRE, or deciding to do Roth contributions instead of 401(k) contributions, or capital gain harvesting. Or, if it looks like you'll be above that 22% number, you can try to defer taxation (as long as there is a future year where you will probably be below the number again). This would be things like 401(k) contributions, HSA contributions, etc.
There are several limits to doing this perfectly:
1. We don't know the future. Tax laws will change, your situation will change, your goals will change in ways you can't plan for. Investments will return more or less than you think. Costs will be more or less than you predict.
2. Even if we had all the data, most of us can't do optimization models well enough to get the ideal answer. I once tried to optimize my taxes and just limited my model to my tax situation and the next five years. I think my "simple" model had about three hundred rows (times five columns). Ultimately I found several coding errors (and I'm a reasonably good coder and fairly knowledgeable about Excel) and then the rules changed and my kids' college plan changed and I learned enough to where the model fell apart under it's own weight. And this was just trying to model my 1040; it ignored HSAs, RMDs, QCDs, cash flow considerations, possible inheritances, etc.
At the end of the day, especially since you indicated that you'll probably work several years past the FI point before REing, you're probably going to end up having way more than enough. Then it becomes a different set of problems - how to bequeath or donate as effectively as possible, and how to give up on the psychological compulsion to do things absolutely ideally (or how to succeed at doing so, I guess). But you'll figure this out in about 12-15 years.
The nice thing is that if you're in the realm of FIRE, financial planning can work pretty well with a wide set of ratios. What ends up happening is that if you continuously look at where you are in your current state, look at where you're heading (predict out your RMDs, for example), and make decently good choices as you go along, you'll end up succeeding. And in situations where the analysis indicates that tacking hard to the left on some financial lever is best, the analysis will show that and it's an easy decision. If the analysis is wishy-washy, then it's hard to tell what the "best" answer is (like when to start SS), but generally in those cases then it doesn't matter much which you choose because there is a wide plain where a range of answers is within the capability of planning.
I guess the last thing I would add is to not have regrets. I don't look back and figure out what my unvested stock options would be worth today if I had just stayed on the job a bit longer. I don't beat myself up (too much, anyway) over not being 100% optimal with my kids' college funding. I don't get mad for saving too much and facing high tax rates when I'm 72 (if I make it that long knock wood). I'm not upset at my Mom for being super excited about the stretch IRA only to have it essentially go away, especially since it went away about three years after she died. I try to make good decisions with what I know, look towards the future, and appreciate and be grateful for where I am and my good fortune. I try to learn from my mistakes where I can - the college funding mistakes I made I can at least avoid for my youngest two kids' last three years of school, for example. And I try to be a good steward of what I have.
HTH.