OK, I just got Stefano to balance, though I'm not sure if spending 800 points on his 'mech is right. He ended up with a 7 WILL and 7 levels of Small Arms backed with 5 levels of Quick Draw. His other level 5 skills are: Gunnery/'Mech (base 3), Leadership, Perception, Martial Arts. At level 4, he has: Piloting/Mech (base 4), Career/Soldier, Negotiation, Tactics/Infantry, Demolitions, Streetwise/FWL, Protocol/Mercenary, Interrogation, and Driving/Ground (he may have stolen Martha himself!). I'm strongly considering tweaking things so he can take the "Urban Guerilla" Special Pilot Ability from the AToW Companion.