In-wall line array wiring question

Putting together some line array in-wall speakers. Using nine 8ohm speakers total for L/C/R, 3 per array. Having a dilema figuring the best way to wire these without dropping to a 2ohm load, or causing an imbalance with a 2P/1S wiring. 4 speakers would be great for wiring but causes the array to be too tall for my 10ft ceiling.

Any ideas?
 

Dan