I like the idea and I might be interested if it were relatively good pay. Depends on the hours required (IC). I think due to the fact Rocho spends most his time hunting and in wars, it'd be best if he were mostly helping prepare scenarios for the troops or be involved in specific training sessions. Rocho has a lot of experience. He's been a soldier and an imperial knight for the Fel (trained force users with good ranking), a mercenary, bounty hunter, and regular hunter.
Though, no idea if he's exactly on the moral standards you'd want. He is a trandoshan hunter and has killed people who probably didn't deserve it. Also Kaine definitely has more experience in combat cause Rocho is only in his late 20's (proportionally older if compared to human years but still).