Which way would you go?

[Finnster]

The 1512 is a helluva big motor for a 1/12. people put those in Revos. 1505 sounds too small. You need something "just right" Goldilocks.

If you are worried about loads, why not go higher voltage (4s1p) and lower kv? Its all a wash powerwise, but its a cooler system at the end.