Canderous has some interesting abilities, the most notable of which is his ingrained regeneration, which will slowly bring him back to full health after he's taken damage, and his head-start at using heavy weapons. Unfortunately for Mandalorians everywhere, the regeneration (which nets him a gain of four vitality every round or so) is outpaced by healing methods like cure, while BioWare apparently forgot to put in any good heavy weapons besides the blaster Canderous starts with. Seriously, there are less than half a dozen different heavy weapons in the game, none of which are upgradeable besides Ordo's Repeating Blaster. This takes some of the fun out of playing with Canderous, since the ability to find new weapons is part of the charm of any good RPG.
Attributes: Unfortunately, Canderous' dexterity score is pitiful for a ranged attacker, so you'll need to get this boosted up as quickly as possible.
Skills: Treat injury is the only thing Canderous should be learning; even with his regeneration, he'll still need a good medpac during heavy firefights.
Feats: You'll have a lot of options due to the rapid feat gain of the soldier class, but rapid shot and toughness are both rather nice, with implant being a left-field pick if you want a handy way to increase Canderous' dexterity.