A motor kv of 3000-3500 would be good for 3s and 4s.
Revo spurs will fit a Jato, but they are smaller in diameter, and you may have a hard time getting a pinion to fit yet not geared too high. You can use a 32p pinion as 32p is VERY VERY close to mod 0.8. I've been using a 32p pinion on a Mod0.8 spur forever and it works just fine.