Well you'll need a Y splitter since the 3009 doens't support 4 subs, just make sure to connect both F12s to one pre-out and and both PB 12's to the other pre out. Then set the receiver to two subwoofers when you plug the setup microphone in and then just run full cal and you're off.
If you're wondering where you should place the mic for all 8 positions here you go
If I were you, since your room isn't exactly like the diagram in the link I would run the first three positions from the love seat in the back
The next three positions I'd run width wise in the middle of the room
7/8 in the corner where it is open (bottom right of the diagram)
And the final position right in front of the TV maybe. This should give audyssey a good picture of your room.