Converting from Dave Ramsey

I’m currently on Dave Ramsey BS6 and thinking about switching to FOO. I have $12k in my FFEF but it’s about to take a hit bc I need a new roof. I’ve been paying off my house at 2.25% <$30k left. I was thinking my FFEF should be more like $20k to cover job loss, home repairs, dog emergencies etc. Should I pause my retirement to save up this roof money and grow my FFEF? I also have a sinking fund to buy my next car in cash. Are we buying cars cash or should I re-allocate that money? Also, how much percent should I be putting to retirement and HSA? I’m 39 with about $140k in VTSAX and make $100k. Basically, where do I find info about the minute details of these steps?