Planning on a 35 mile 3 day backpacking trip next week and taking my ENO DN. Trying to decide on bottom insulation. I currently have a thermarest pro lite shorty at 11 oz. and a luxury map self inflating at 4.5 lbs! I was going to either get a ENO hotspot or a z lite sol. Temps should be around 40. Trying to work towards lightweight. I've already converted my mummy bag to a 30* top bag. No underquilt in the budget right now.