SBR'ing a Calvary Arms plastic lower?

[winmdl98]

My original plan:
billet lower, 325; geissele trigger, 280, UBR stock, 265 and a few other goodies brings the SBR price to about $1230 for the lower half.

I know the Cav lower is the cheap route. I figured I could do it for about $420 substituting some other parts (tuned RR NM trigger instead) as well. CA told me I could shorten the A1 length buttstock an additional 1.5" without any problems with the buffer tube.

I thought the $800 difference would allow me to build the upper and recover the barrel cost and Form 1 a 9mm suppressor.

I know, it is ugly as heck, but some desert camo or FDE/OD acsents would help.

Any thoughts?