If you're wanting to spend that much $$$ on a piston AR, get an LWRC or LMT MRP piston instead. Heck you can even get an ACR or even a SCAR.
You're going to hate yourself after huffing the beastly POF rifles. Their rails are overly heavy, bulky, and they're just clumsy rifles to handle. They've overly built and heavy.
You can also go DI and for about $500 less, you can get a really tricked out AR from BCM and possibly even about 1000 rounds of .223 to play with or a nice aimpoint/eotech.