I'm looking for recomendations for a set of long underwear. I will be leaving 4/11 from Springer and sleeping in a hammock. I've no doubt I will experience at least a few really cold nights and need some decent long johns to keep me warm. They will be worn around camp under a pair of lightweight nylon pants and a fleece jacket. I don't have any experience with spring weather in the south. It seems everyone uses patagonia capilene. Which would you recomend the capilene 1, 2, or 3? What would you recomend as a less expensive option? I'd prefer not to spend $80 or more on long underwear for the trail. Thanks!