I will be backpacking in Zion in late March/early April, and night temps at elevation can be in the 30s, much colder than I usually camp in, where being hot at night is the usual problem. I have a single-person 3-season tent, inflatable sleep pad, and my trusty fleece that has gotten me through nights in the high 40s. What is the cheapest and/or simplest way to make this system sufficient?
I am currently thinking a legit sleeping bag like the Kelty Cosmic Down, hand warmers, and an emergency blanket between my pad and the floor of the tent. Or should I go all in on a 4-season tent? They are not cheap, and I doubt I will use it much.
Any other advice is appreciated!