I'm 167 lbs (75.8 kg) at 5' 11'' (180.4 cm) when empty. Would the following be sufficient for minimal ground camping?

It must handle summer camping in all North America mountains.

Hammockgear premium topquilt:
- temperature : 20° +1oz 950-fill
- finished length: 74'' (standard)
- finished width : 50'' (standard)
- footbox : drawstring

I usually sleep on a hammock, but I'd like to be ready if I need to go to the ground. It'd be really great to hear from similarly sized individuals as well.