Rustoleum Hammered Finish Gray, after assembly
I did the same thing with the AKZO 2-part stuff. I opted to assemble and then final paint, as I figured the rivets would stand out, and the paint could get damaged by the rivet gun.
I scuffed the primed interior with maroon scotchbrite, then used lots of SEM Solve solvent to clean everything up real nice. I also masked off everythig I didn't want paint. Then I use Rustoleum Gray hammer-finish rattle cans. This goes on in fairly thick coats. Surfaces need to be as flat as possible for the best hammered look, but it's not critical.
Prior to going this route, I did several tests with different textured rattle can stuff. I prepped them all equally, then sprayed and allowed it to cure for the approriate time. Then I abused the pieces by dropping them, then by dropping tools on them from about a foot high. The hammered stuff held up very well in my tests, and the Gray color was the most pleasing.
If I were to do it again, I would use the silver. The gray is nice, but I believe it is a bit dark.
Oh, I also have the fuselage on a rotisserie, as suggested by several folks. That did make the painting a lot easier.