AwakenTheSkies
Life is like a box of chocolates
Yeah I'm just talking at this point. Waiting for the paycheck so I can order the stuff I need.You honestly overthink it.
Get one decent tool (whatever it is: Z file, 3 corner, whatever) and give it a shot. As long as you mark the top of the fret and know when to stop, crowning is hard to mess up. Just be careful when sanding afterwards that you don't sand over the top too much and too early (personally I don't touch the top of the fret until I am at like P800+ and then I stay very even).
Leveling is a tad more technical because it's easier than you think to rock the beam, angle it or just not put the light homogeneous pressure it needs.
Impatient to get started, it's a good thing I have these old cheap guitars to practice on.