Speaker Wiring Question

[cappie]

New member, first post, so please be gentle. I have been reading a great number of post here and it has been extremely educational for me. After months of research I have taken the plunge into seperates and I have ordered 2 xpa-5s(they should be in tomorrow!!). I have a question on the best way to wire my speakers from the 3312ci to the XPA5s. Currently, I am running 7.2 off of my Denon 3312ci. In addition, I used the RF and LF pre-outs from the back of the 3312 to my old Denon 3808ci so i can have 2 wide front speakers using my Klipsch RF25 towers. This gives me a suedo 9.2 of sorts. I used the volume control on the 3808 to help balance the the RF25s with my RF & LF Def Tech Mythos XTR 60s. Since i will be taking the old Denon 3808 out of the mix, what is the best way to hook up 9 speakers using the 3312 since it only has 7.2 pre-outs? I was planning on using RCA Y's from my LF and RF pre-outs to one of the xpa5's so i can get 2 RF and 2 LF channels but i dont know how i would be able to balance the volume between the RF25s and mythos60s, not to mention the havoc it will have with running Audessy. Any suggestions would be greatly appreciated.
Thanks
Cappie

Denon 3312ci
2- Def Tech Mythos xtr60s
1 - Def Tech Mythos xtr50
2 - Klipsch RF25 Towers
Boston Acoustics Micro 90 - SR
Boston Acoustics VRS - SS