What do you want to do?
What would you do with the extra $$$?
Is there anything other than the money that makes this new opportunity attractive?
What would you be giving up to take on the new job?
Do 2 and 3 outweigh 4?
IMO, you already have enough. Ergo, you should not make this decision based on money. You should jump only if the new opportunity gives you non-financial benefits that are compelling (like if your current job is boring as dirt and the new opportunity is scratching an itch you didn't even realize you had).
IOW, your income:hours ratio is currently exceptionally high, giving you both enough $$ to meet your goals in the very near future and enough free time to enjoy the heck out of yourself along the way. The new job has a much lower ratio, so you'd be giving up a bunch of free time to make a bunch more money. This is not a good deal, unless (1) you really really need the extra $$$, or (2) the new job offers some sort of other intangible benefit that isn't reflected in this ratio.
This. She's spot on. (Kudos
@Laura33 )
I say this, too, FWIW, as someone who has turned down similar opportunities to work a lot more in order to significantly increase my income. Like you, I WFH, and while I work more hours, the pay is good per hour.
I have tons of flexibility and plenty of pay now, so why move? It just didn't make sense for me to give those up, especially with young kids. In fact, I went from a very good yet slightly less flexible job to this one, which is both more flexible and pays better. And I turned down a number of things like what you're considering.
Instead, I make
way more
per hour now, and with low stress. I even have a little side gig that I can expand if I really wanted to blast away at extra income in my spare hours. I couldn't imagine giving this up.
It's hard to put a price on all of the extra little breaks and lunches I can do with the kids without interrupting work whatsoever. And being there immediately once work is over, without any commute to make me frustrated at the world.
You have a unique and fantastic situation, it sounds like, so I would be hesitant to make a jump from that into a ton of work. Not least because you may find that it's quite an unfriendly adjustment to get back into all of that.
I would also be more hesitant since the payoff of that other opportunity is years out there, versus what you have right now.
Finally, I would consider whether you could just add on to what you're doing with some gig work or the like, if that's an option, rather than take the full leap. Or buy out someone else without all of the other in-office commitments - I'm sure that partner isn't the only boomer around who's looking to retire.
Then you still control it fully and can back out if you need to without the huge commitment.
At any rate, I'm not saying never, but it would have to
really be worth it to make that kind of leap.