You shouldn't be putting anything more than a 3s lipo with those higher kv 550 motors..
best choice would have been a tekin 1800-2000kv buggy motor to be honest.. if you wanted 4s lipo. Super overkill for the platform.. a 3s lipo with 2000-3000kv is great. Any higher kv should be kicked to a larger 2s lipo imo.