need some expert advise for newbies

If you are worried about living in the motor home during the winter in CO then you could consider renting a house or apartment for the short time before you move to Nebraska if your house sells. The motor home seems to be the ideal solution but again if winter time worries you, do the alternative. I definitely wouldn't wait to put the home on the market because you never know when sales may come to a screeching halt again. You know you are moving...take advantage of the softer market. That is just my opinion and what I would do if I were in your situation and Lord knows I wish I was in your situation. I've got years still ahead of me but I dream of the time when I can start counting down the days to retirement. Good luck to you!