At a minimal you should have at least 4X capital of what you need to live on, and another 1-2 years stashed away outside of your trading accts.
Quitting your job to trade for a living after you have taken at least $250-$500k out of the market while at your job is confirmation that trading full time may work for you and its smart to fund your new trading career from profits already made.
It always takes a lot more capital, a lot more time to hit your stride, and costs a lot more in market tuition than most could have ever imagined.
I think your numbers are reasonable. I have no plans to quit my job, however it would be nice to have that option in the future.