Just wanted to give some more feedback here, as I have been running with this setup for the past 48 hours.

ROM flashed to 3.04, nice improvement in speed there.
Full 2.5 install, as per the initial post in this thread
- Installed the Disable HTC SMS
- installed the disable SMS notification cab
- installed the MMS fix

I can now receive and send SMS, MMS through HTC Sense.

Overall, the install is very nice, though for some reason, a side effect of one of the cabs I installed, when I am on the main screen of Sense 2.5, and I scroll, I only have placeholders for 9 application links. For some reason, I thought I had more previously.

One problem I did come across, is that after about 36 hours without a reboot, running around 75-80% RAM, my Favorite Contacts photos were messed up on my CONTACTS tab. a soft reset resolved this, but the cause is unexplained.

Also, Everything runs well, unfortunately, does not really account for the ever-present memory leak in WM.

Outstanding items
- AGPS within Sense (Weather, Twitter location, etc)
- SMS notification of unread messages VERY slow to clear
- at times, Sense UI is laggy, especially within Contacts

will update with more as I come across it, Otherwise, I love this.