Sweet! Did you get to hear the DC10ti's first? My "first audio love" was an older 10" Dual + woofer speaker, the D700.I ordered the DC 10ti's (great room) last night with some cms 801's for the ceiling in my kitchen.
Keep your amp, and put that money towards three subs, a miniDSP, and a measurement mike. With great speakers, as long as you place them well the only issue you'll have is horrible upper bass performance. That's a function of small room acoustics. With multiple subwoofers in random places around the room (i.e. wherever you can stick them) you can smooth out room modes and have high-fidelity reproduction from top to bottom.I'm pretty pumped but now probably have to consider a sub and possible a new amp to run the monsters in the great room even though the DC 10's are extremely efficient. The rabbit hole just got bigger.