Not an answer, just wanted to say that regardless of the outcome you are doing well. A few years back I was doing 70k GBP in Cambridge (expensive as fuck) in my mid 30s. I could only imagine pulling +100k in a LCOL in my 20s.
I’m sorry, no. 75K in London is not “doing well“. Double that - maybe, though I’d never accept that personally. I love London but I would not move there to do what I do for less than 300k. And even then I don’t think I’d be able to say I’m “doing well”. Several people I know personally have left Nvidia this year - retired - in their 40s, with high 7 digit numbers in their bank accounts. They are “doing well”.