Proud new frontier owner (almost)

Well Monday or Tuesday I go pick up my new 2010 Fontier SE King Cab V6! I chose the six speed manual in night armor gray with the value package. The truck I'm trading in is modded to the max and I'll miss it so I guess I'll start building on this one soon. I already ordered the westin sportsman brush guard and have all the stereo equipment from my dodge ram to re-install. Alpine head unit, rockford amp, rockford subs. Just don't know where to start after that.... Any suggestions on lift? I don't wanna change sub-frames or get crazy so what is the most I can do with spacers and what tire sizes can I run? Oh yeah, I also ordered K&N intake and am looking at the bully dog triple dog programmer/monitor. Anyone used one or reviewed one?