If I have enough screen time, this week, I'll try to get the image thing in that Cowboy/Hilton thread sorted.
The frame looks very stout, I'd suggest to just start building.
For future steel painters, here's a tip: If painting rusty steel here's how I proceed--Knock off any large rust. Brush with steel brush until I can't take any more. Spray with dilute phosphoric acid, brush, let sit, spray again and rinse immediately. Let dry. Paint.
Lately, I've been using liquid water softener cleaner from the Big Box stores for the phosphoric acid part. You can also buy Martin-Senour Iron Etch at autobody distributors but it is 6 times as expensive and any PA will work.
FWIW, I used flat black on my trailer tongue and it looks great.
Keep rolling those plans around in the grey matter. Figure how you're going to move inside and what goes where. One of the real advantages to building, yourself, is getting everything how you like it. For the record: I dislike making overhangs on trailers. I guess sometimes it's necessary to capture more space but they are a ***** to keep sealed and in one spot.
