Noob question guys. My buddy and I are planning to do an AT hike in Georgia around the 2nd week of Dec. I have 20* alps mountaineering mummy bag. Expecting temps in the low 20s. Seems most people use a tq and a uq. With my bag do I need a uq or would a PLUQ do? Since I live in Florida I really don't have a way of testing these things before I get up there. Wont get that cold here expect for like 1 week in January. lol. Thanks guys.