I'm in a bit of a pickle here and need your advice. I'm trying to complete a sleep system for my girlfriend and I that will allow us to take on all four seasons here in the Yukon. Already have a -30 bag for the winter, but need to round out the rest of the year. This summer we did a 10 day trek in Kluane National Park and got by well with our sleeping bags. I used a friends WM Summerlite and she used my old MEC Merlin -3 sleeping bag. However, I had to return my friend's sleeping bag so I have to figure out a new system for us. Your advice would be appreciated.
Option 1: Purchase a quilt for myself (I'm thinking an EE 10degree quilt) and my girlfriend can use my MEC Merlin -3 bag for herself. Getting a quilt for her is a non-option as she likes to be swaddled in a cocoon when she sleeps. I've never used a quilt before and am slightly concerned because I am a twisting, turning, flailing sleeper and even at the peak of summer we can get freezing temperatures up here. This set-up would also have limited use in shoulder seasons as we push the limits of the MEC – 3 bag even in early May and late August.
Option 2: Purchase a WM Ultralight or Versalite for her. Though slightly heavy for summer use, she can be a cold sleeper and this would ensure she's comfortable from at least May to September. The added benefit of this approach is that I could use this sleeping bag for early spring/late fall hikes or hunts when she does not come along.
I'm leaning towards Option 2 right now, despite the increased weight. What do you guys/gals think?

