[lincpimp]

80amps on 5s in a truggy geared for 40mph should be fine. I would stick to the mm if you will use 4s. The quark escs are good, I have a 65 on 6s in a 1/8 buggy, and so far it is fine. Quark's surge specs are quite high, not sure if that is BS or they are really that good.