Ya, get the rail, barrel, and gas block you love and don't be afraid to p/w if you realize the limitations

I did a 8.5 barrel with a 7in slr rifleworks rail. It leaves the perfect amount past the gaurd to screw on the can.

I have a 12" and is my go to.

I have three SBRs, two are 10.5" and one is 12.5". One of the 10.5" is a 9mm AR. The other 10.5" is a 5.56mm and my 12.5" is a 6.8 SPC. I like the 10.5" most of all. Here's the 5.56 and 6.8:

This.  10.5 is pretty annoying to shoot unsuppressed and is rougher on cans when you do actually shoot suppressed.

My 7" upper serves my practical purpose as a PDW within 150 yards.
Great for cqb, room clearing, being armed when not looking armed and vehicle ops.    
I can shoot half dollar groups all day long with a T1 4 moa red dot at 50 yards out, drop a 1-4 variable and groups are consistent all the way out.      
You eliminate the light show with a good flash hider like the KX3 or KX5.  
I'm not suppressing it, so no can worries.

I haven't had any volunteers that want to step in front of the "toy."      

You should know your platform's purpose.  That's why I have other sbr's.

Muzzle brakes are your sacrificial blast baffle when shooting a can.

All shorty barrels suck shooting unsuppressed, especially with a brake and not a FH. For that matter longer barrels suck unsuppressed too.

A 10.5" barrel is so rough on a decent suppressor that after wearing out and changing a couple of barrels you might have significant baffle wear. See for confirmation the thread in silencers with photos of baffle wear.

JPK