Looks like if I put my 5.1 stuff on hold, I can afford to get an AVA Ultra 550 amp, Ultra Preamp, and soon after an Ultra DAC.
Should give me a nice 2 channel system to start with, and I'll add 5.1 later on.
I hope I don't have to upgrade from HT2-TLs for many years, but there's always a chance that I could for some reason. I think the above system should give me enough flexibility for just about anything.