I've run the numbers and I think I already know the answer, but it's always nice to get some reassurance or a reality check from relatively likeminded and friendly internet strangers.
Question
Are we in a place where I can "safely" attempt Coast FIRE for at least year? Based on the numbers below, I think in about 10 years (at ~$500k with a 7% growth rate) we would have about $1 million in investments/cash, be able to pay off the remaining mortgage balance, and still have enough left over to be fully FI.
Summary
Basically I'm pretty damn burnt out at work to the point where it is requiring medication to keep me functional. Irrationally, I was hoping I could just keep the job until fully FIRE'd because most days it's manageable and borderline enjoyable but there's just a level of randomly recurring toxicity that isn't going to go away.* I know it's only a matter of time until it manifests again. Given our resources, if I quit I'd like to take a year off to decompress and just recover from 7+ years of selling my soul. I haven't had a full two week vacation/10 business days off work since 2016. I just don't think I could jump into another roll with so much baggage and mistrust from my previous one. Ideally after a year off, our finances will still look awesome and I'll be able to just work part-time doing something I enjoy. I think it is pertinent to mention that I'd continue working part-time through my side hustle even if I left my day job.
No plans on having kids, but if it ever happened we agreed that I'd be a stay at home dad. We also have my wife's parents nearby that would undoubtedly kidnap and spoil their first grandbaby, free of charge.
Numbers after taxes
My day job: $6k/mo
Spouse day job: $4.5k-$5k/mo
My side hustle: $1k/mo
Spouse side hustle: $1k/mo
avg monthly income w/ two pay period in a month: $12k-$13k
We had a pretty spendy year last year because we bought our home and moved cross country, but still put away a sizeable amount. Now that all the foreseeable home projects and furnishings are taken care of, a spendy month would be $4k per month if we absolutely splurged -- meaning there's still over 50% of our take home pay to stash.
An example "Worst case" scenario - we'd only have $1k out of $5k left after our spending is covered for the month which includes "fun" or frivolous stuff -- so we'd have a 20% savings rate. By mustachian standards that's not that great, but much better than the national average.
Mortgage: $382k remaining, monthly payment $2k. This is our only debt.
Monthly expenses such as gas, groceries, ultities, netflix, ect: $1-$1.5k
So a frugal month might be $3k, an average month might be no more than $3.5k, and a spendy month might be $4k.
Important details
My spouse is on board with me resigning and we could get health insurance through her employer, which is nice. That would cut into her take home pay, but I would still expect her to average at least $4k per month after taxes. She enjoys what she does, has a very marketable skill set if she were to ever lose her job, and has no interest in stopping in the near future.
With my side hustle, I'm certain I could scale up and earn 2-4x more when I suddenly have 40+ hours of extra time each week.
Another added benefit -- and trust me I've talked her ear off about all of this -- is that I'd most likely be a better and more-present partner. Having a "me" that is more energetic, healthier, and happier is important and if the shoe was on the other foot we would have already had her stop working.
Assets
Cash: $49k -- and the agreed upon rule is that we'll always have at least $50k after expenses are covered. Anything above and beyond goes into investments or paying down the mortgage
Taxable accounts: $255k (was as high as $280k earlier this year)
401k's: $165k
IRAs: $12.5k
HSA: $14k
Approx total assets: $495.5k, not factoring in home equity or mortgage debt (Approx $270k based on market value versus outstanding balance but I don't like factoring in primary residence as an asset )
Incoming additional revenue: tax return, and whatever PTO they'd pay out upon my cessation of work, which is at least another full paycheck.
TLDR: We need at most $4k a month to maintain our current lifestyle. Once the house is paid off, our monthly spending will probably be closer to $2k. We can either make way too much money while I'm miserable, or cut back. We'd still bring in at least $5k a month, and have a better quality of life while patiently waiting for the stash to grow. Heck, maybe at some point it will be so large that we can pay off the mortgage and still have enough left over to be FI.
*Feel free to read my 30's journal if you want a deeper dive into those details, but the TLDR version is that there's enough depression and anxiety that I don't have the gumption to sincerely look for another job either within the same company or externally.