A long can 2600-2700 pulls a good 60-65 amps on 4s with the CS10 rotor, and 4200Kv would be waaaay too high for 4s as has been said.
If you want something hotter than 900w then I would look at the HET 1W40, 3300Kv, cheaper than the velocity and imho a much tougher motor.
If you can go to 6s then you have much more choice, HET 2W30 or Eflite BL32 are excellent 1400-1600w setups with the CS10 rotor.

Also the CS ratings for RPM are unproven so be wary when running it over 34k.