Hi milkman, Welcome to the forums, and good luck in your travel adventures.
I would recommend the 25' over a shorter trailer. I had a 25', it got totaled. I bought a 21' and it was OK for about a year, I just went back to a 25'. There are usually just 2 of us but the extra space is nice and gives you more options in floor plans.
As Going camping said above, go to a dealer and sit in a few of them for a while. Imagine the 2 of you in there all day on a rainy day and see what you think. If the 22' is what you want, then go for it. You can always change your mind later.