I know most people in the paleo sphere poo poo gaining mass and size in favor of lean functional muscle, but recently I've really wanted to put on about 15 pounds of muscle. I'm 6'2" and weigh about 225, and I'm about 80/20 paleo compliant.

I'm wondering if just upping my protein and maybe adding sweet potatoes would meet my nutrition goals? I'm still researching the basics of serious weight training, so any input would be appreciated.