Where are you going for this week?
For example, if you were coming here to Alberta, I might recommend the sleeping bag liner and a down sleeping bag ... and a sarong ... and a blanket ... and several layers of clothing you could sleep in ... and a balaclava to wear at night to keep your head warm ... and ....
I bring two itty bitty sleeping bags and a sarong. In some places I'm wrapped in the sarong inside both sleeping bags, in other places I sleep on top of the bags (they make an additional cushioning layer for the mattress) with just my sarong over me. It all depends on the night.