I have a somewhat unique setup & need some help deciding if a 1050 would do the trick.

What I have now is:
RCA DTV300 61" HDTV w/ built in DirecTV/ATSC tuner.
Carver C1 preamp.
Carver M500t power amp (251 Watts x 2 into 8 Ohms, 0.05% thd).
Martin Logan Sequel electrostatic speakers (I'll worry about buying the other speakers later).
And a not hooked up RCA 100 Watt powered sub laying around somewhere too.

The TV sound and SAT sound both come out a single Toslink connector. Can I program the 1050 to use the same optical input for both TV & SAT? If not, is there such a thing as a Toslink splitter?

I don't think the internal amp is big enough for the Martin Logans. Can I set the internal amp for 3 ch.mode and use preouts to my Carver M500t to power the mains?

Thanks for the help!
John