Excellent choice!
I've used the expedition for years and found it to be great. I've just bought a
Safari and I'm having trouble getting used to the extra space (and weight).
The snakeskins are a great idea and although it's never as fast as advertised it does make it fast. I've got the fly on my Safari on the outside, so I can set it up first in the rain and the hammock remains dry, or pack up in the rain and just stuff the wet fly in a stuff sack for later drying.
Also, If you do decide to try it out this autumn, I find the
sleeping mat that World Famous make for cold weather camping combined with polyester fleece underwear and a good down sleeping bag make cold weather camping comfortable.