How about an old car battery for power.. when you see voltage drop below 12.0 on startup then put it on a trickle charger, or let it ride back in the truck for a while.. I have run this setup for an entire winter using my camper's battery, and was surprised how few times I actually needed to charge it.
As for antenna, a few of us here have the Arrow J-Pole, and for a 2m base I'm not sure how you could go wrong with that. http://www.arrowantennas.com/osj/j-pole.html
hard to deny $40 too. but that's not going to get you into other bands, just 2m and 440, but you can break it down and take it camping.
82 fj40, 99 uzj100, 06 gx470
97 DR650, 05 525EXC, 01 XT225, 89 TW200, 09 TTR125, 07 TTR90, 07 CRF50