Sounds pretty good :-)
If you end up trying out the T200s, please post your impressions. I've been running MC300s across the front for close to 2 years, and have been thinking about doing a few upgrades.
BTW, I am running a P200 along with a P500 and quite like it. Adding the P200 was my last upgrade, and I've been looking at doing a pair of T100s and an MC400 center, but the T200 is an option too.