Large Room-Treatments and WAF-HELP??

Okay so here is my quandry in a nutshell. We have a large, what would be called, and Arizona room. Great room, dining room behind it and kitchen with a half wall bar/seating area seperating the kitchen and dining. Great room is around 18' x 18'. Listening area is about 12' back from the speakers. Total room however is around 25' x 35'. Large 3 panel arcadia glass door and some other windows. Needless to say, the room is very "alive".

I am thinking that Corner busters and Echo busters will be nixed really quickly.

Currently using all solid state but willing to look at all options to tame this system down a little. What I don't want to do is bandaid this thing because I don't think that would be the best solution.

I am deferring to any and all reasonable suggestions short of "Buy a different house". That duck just won't quack for now.

Thanks for all of your help.

Steve Bachman