Nah, like this:
You're right about the other esc- 0.5v shouldnt be an issue, then again, it might be a pain if something does go pop inside. A mambamaxx would still be my choice- not much work to make it handle 4s lipo, and no separate lvc issues either. Only other options might be something from Quark (80amps model)- but servicing is almost non-existant, or MGM, but their prices are alittle higher. If you see an Mtroniks truck esc, that'll work well.