I would think that you are going to be running the subs on opposite walls etc., so you should still only need runs to all 4 walls at either the midpoints or corners and then use Y connectors of the avr output to feed all 4 outlets a signal, at least until you upgrade to the latest and greatest avr. I would still order from Monoprice, you would get the parts in a couple of days. You should be able to use Keystone jacks in any configuration you want for coax.

http://www.monoprice.com/products/subdepartment.asp?c_id=109&cp_id=10426


Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70