Hi and welcome,
I’ve been living full time in my 1994 Class A 33’ Holiday Rambler for over three years now and I love it! FWIW I took a two month Alaska/Western Canada trip this past May and June. Unlike your 2006 Alaska trip I chose to put my 7.5mpg behemoth in temporary storage and do the adventure in my 26.5mpg Dodge Caravan exploration vehicle. Two months and +12,000 miles traveling and living in my Caravan was great fun.
You sound like someone who’ll love the full time lifestyle.
Steve