Can a McIntosh MC7205 handle Polk Audio RTi A9’s?

I checked out bi-amping briefly. Tell me if I’m wrong.  I can biamp channel 1 & 2 and channels 3 & 4 to the RTi A9’s’ and channel 5 to the center RTi a6. I can use my MC-58 bridged to power the TSi 500s surrounds and the remaining 2 channels(30w) ea. To power 2 TSi 100’s or Monitor 40’s. It sounds too easy, where did I go wrong?

Thanks for all the advice. I read where the 7205 can’t be bridged, but how would I bi-amp them?  I guess I got myself in a pickle. I upgraded from a McIntosh MC58 bridged to 100w/ch that was powering a pair of TSi 500’s and I have to turn up the volume to half the power in HT tv to hear it. On music I notice the TSi 500’s don’t come alive until I turn the volume on the mc58 half way. I’m afraid it’ll be the same or worse with the MC 7205 and the Polk A9’s. 

If I used my mac58 bridged to send 100w to the HF terminals and my Mac7205 for the LF terms on the RTi A9s and the surrounds. Would that work and would it give me more power for the Polk RTiA9s?

The only speakers I want biamped are the 2 RTiA9s. They are rated at 500w each. 

I received the Polk audio RTi A9s today played hotel California from Hell Freezes Over and Tea for the Tillerman on sacd and they sound fantastic!!  The McIntosh MC 7205 is powering them nicely, at least I should never blow these speakers out.  When the audio racks are delivered later today, I can connect the MC58 and connect the TSi 500s as surrounds and I have on order A PAIR OF PA RTI A3’s for the back.  
Sounds SWEET so far.

After listening to the A9’s for about a month, I’m very impressed by them!  They are running from my McIntosh MC7205 amp at 120w ea and they sound beautiful!!  They wake up at around 45w, they kick in to another level at 60w. Over 70watts and the neighbors kick in! Condo. They’re big and beautiful. I also added a pair of Polk audio RTi A3’s and sacds sound fantastic!!