Jerry, The fantastic fan mod is relatively simple. It does not require new vents, but only the removal of the existing fan from the inside of the Edge. The vent lid and external roof unit stays intact. Although I did not do the mod by myself, it appears to be an easy project, based on other posts that I have read. We also put Maxx-air vent covers on the vents. Give the first trip a try without a WD hitch and sway bars, but I'm willing to bet that you will require them if you are travelling any distance. Things can get pretty hairy very fast when sway starts to get out of control, and at the very least, can tire you out very quickly when fighting a swaying trailer. Oh, and I almost forgot, give a thought to a memory foam topper for the mattress. If you decide to pass on the memory foam, then maybe consider a gift certificate from a chiropractor for your significant other.
Have a great trip, and let us know how it goes.
Cam