In case you have not seen it, here is the chart comparing the different versions of Audyssey:
Honestly, I would take the "Integra gamble" and coax my budget to $375 and get this Integra DTR-50.4 with XT 32. Put it in your HT room and move the 1300 to your bedroom.
I assume you are aware of Onkyo/Integra's reputation for overheating. I don't know if they did any modifications to refurb units, but they give you a two year warranty which should be long enough to reveal problems.
However, people are understandably reluctant, so Integra has to price it to sell them! Consequently, you end up getting an AVR with MSRP=$1600 for $375. This is a 135WPC AVR with Select 2 Plus THX certification (I know you don't need it for your Klipsch system, but always nice to know you have solid reserves).
The one bone-head thing Integra did with this unit is not include Audyssey SubEQ HT... it will not "ping" your subs and level and phase match them prior to applying Audyssey XT 32. What this means is you need to level match your subs and ideally position them so they are close to the same distance away (to match the phase) manually before running XT 32. Audyssey will then treat the two subs as one and level & phase match the pair with your other speakers.
Seems like I saw something to indicate you are somewhere nearby (Atlanta area), if you like, I have a Denon AVR-4311ci you can try out for a week or two and take some measurements to figure out exactly what benefits you would get from XT 32. Just let me know and we can set something up!