First off Slides are a must and high ceilings.
We had a 4 bedroom 2 bath home in WA and we couldn't wait to ditch it for the motorhome and take off! Less up keep, no yard to mow, if the weather was horrible we were outta there!
We actually sold the house before we retired! DH had to just remember which campground to go home to after he got off work. He did that for 2 yrs.
We moved into a 37 foot motorhome w/2 slides and was way overloaded ( being newbies you want to take it all!)
We traded for a Alfa Seeya 40 ft motorhome. Mega living space 2 slides. Found out the basement storage area was less and we really pitched stuff. You really don't need much. I still pitch stuff out and now that I have a Winter base I have had my first yard sale so I don't have too much. I have learned being on the road 7 yrs in May that less is better.
I will note that the newer motorhomes are coming out with higher ceilings which is good so you do not feel you are living in a box. 5th wheels have always had higher ceilings because you go UP into the bedroom.
Have at least 2 slides but remember the more slides you have the heavier the RV will be and the less storage area. Some of the newer one have 1 giant slide.
I have no regrets pitching the house but mostly because we owned the house it did not own us! It was easy for us to part with all the clutter.
Now we enjoy the million dollar views and not the million dollar price tag!
Being two very independant people who never shut up helped us to adapting to this new lifestyle. We also love to travel so it was always fun getting "Hitch Itch" and waiting to move on to the next great view.
In the Pickle Jar of Life
Friends make a Dilly of a Difference
Seeya down the road