NOT the fun part

I doubt I'm alone on this, but the paint phase is not so fun at all. 
After most of the year on this, most of which has been quite enjoyable, its time to paint. Camping in it's still a couple months away probably, but there is light at the end of the tunnel. And I need to get all my rebuild windows, doors, trim, etc off the bench and screwed in place.
I've read every thread here over and over, browsed around elsewhere, talked to painters I know, the local auto paint store, a local body shop, and all the building supply places around. 
So I decide, to quote someone here, "do what your comfortable with," and FINALLY decide I'll roll it. Well a few days ago I'm at the hardware and kind of slow down in the paint isle and the nice lady says, "can I help you?" 
I've got this old trailer I tell her, and I'm going to paint it with a roller.
"NO!!Don't do that," says she.
After I explain all my reasons for not spraying I go home and my neighbor and friend across the road is tinkering around in front of his shop by his beautiful "Oasis", a 50's era, shinny trim, pale yellow paint, etc. (he followed mobletec).
"How's the trailer coming?" he wonders. I tell him I'm about ready to roll paint it.
"NO!! You can't do that! I'll volunteer my buddy John (the guy that painted his). He'll love it. He likes beer, too."
Well, the beer I can get, so let's see what happens.
In the mean time I finish cleaning, sand, sand, sand with wet 220 and 320. Looks pretty ready to me. But I read all different opinions on what to clean with, type of paint etc. Someone even says you have to paint within 72 hours of sanding.
I have visions of getting it done, driving down the road and seeing paint fly off like maple leaves in a good October wind. 
Had to get that off my chest. Stay tuned.