Dude, with how well made the "braces" are these days, I'd forget about the Form 1, and just build a pistol with the brace. Also, like Dave mentioned, traveling out of state with your "pistol" is MUCH simpler than with an SBR.
I have a feeling that if we can defeat the Dems plans for the 2018 Assault Weapons Ban, then it's time we start hounding our reps to try to remove SBR's removed off the NFA registry. And we need to push for the SHARE Act/HPA. I prefer the SHUSH Act, which completely de-regs suppressors, and doesn't require any registration or background checks, it basically negates them down to muzzle brake level, so you can buy and ship straight to your door.