Yes, I've started spinning at home on a trainer about 30minutes every day, so as long as I keep that up, I should be in better shape come spring. However, riding indoors is a lot different than riding outside, especially given some parts o my route are relatively hilly. I'll plan on driving a little in the right direction, which will shave off 15miles on my first day, and I won't feel bad if I don't make it as far on the first few days, as I know I'll be able to do more towards the end.
Luckily, my planned transportation on the way home is to have a family member pick me up in his small plane, so I'll be able to "bail" at the end of the trip, so long as I end up at pretty much any airport in the Northeast US, so nothing bad will happen if I don't make it, however, i'd like to not have a plan that's completely impossible.
I guess my biggest worry is that I'll probably have only done, at most, once small trip overnight trip to test all of my gear out.