E-Revo set up?

Hey everyone, I'm new to electric...I've been running a Slash with MM 7700 with many fun times and great racing results. I want to send my son, who is stationed in England a new E-Revo and was wandering if I could send it off with my MM7700 with a new Hyperion E-Revo 6000mah 7.4 combo. I can pick up a lees powerful system for my slash. I would add a fan to the esc and a heat sink to the motor. Would this system be reliable and powerful enough to satisfy a semi experienced basher/racer. Or do I need to go moor extreme on the motor and esc. Or do I need 2 lower KV motors and a different wiring set up. Any help or advice would be appreciated. He has amny lonely hours to burn and an indoor track near the airbase.