Obviously you know that your main focus has got to be to continue to gain size and strength together. Hopefully you’ve read around the forums and understand just how important eating is in getting both bigger and stronger.
To answer your question, I think powerlifting training would be great for a beginner. I know that I started (not too long ago) on the Westside for Skinny Bastards program and I loved the incentive of trying to push my lifts up from week to week. I would recommend going for 5RM’s rather than 1 or 3RM’s though, I found it more helpful for me at the start.
Even if you decide to get into a power-lifting style routine, make sure you don’t neglect any movements just yet- remember that all of the top powerlifters had a good base of strength before they started to really specialize.
Especially if your goals are equally aesthetic and performance-related, I would try to hit each major muscle grouping (quads, hams and glutes, chest, bis, tris, shoulders, upper back) twice a week.