Brushless Savage, Q's

I am thinking of converting my Savage to brushless, I am wondering if a warrior 9918 and 9L motor or a Mtroniks Truck and a 9L motor would be a good set up, and I will be running on 12 cells, I want 35-40mph with good torque, and not to hot preferably, will thos esc's work and also is that a good motor choice, or would something like the 7xl be better?