Well, as a smuggler and mechanic, some of your rep fields pretty well define themselves. G-rep is a must to get you jobs, and is probably your primary field when it comes to rep/networking. R-rep is a secondary possibility, especially if you're doing any design work. Finally, are you a smuggler who works in/for the Planetary Consortium or hypercorps (c-rep) or the outer system (@-rep)? Faction is impossible to determine based on what you've provided -- any of them could have a pilot/smuggler. It's just as easy to be an uplift who was hypercorp trained as a technician and pilot who turned to smuggling once his indenture was up as someone who grew up as the apprentice to the ship engineer on a scum barge. The smuggler and technician templates are pretty solid starting points for your skills -- most of the adjustments to them will be based on your background. The person who grew up as an engineer's apprentice on a scum barge likely has a few of the habitat maintenance skills from Panopticon, since one of their big duties was likely keeping life support functioning, for example.