peggy29forever, check out the group hangs thread: "Hangouts, Campouts & Trip Planning" to find one in your area or to organize one. You can also find local hangers in your area & send them a Personal Message to see if they'll meet up with you.
As far as the warmth, much of the warmth comes from the quilts that you use on top or on bottom. The Clark has some excellent features - I like the NX250. If you get into this enough, you'll likely end up with more than one hammock.