Interesting situation: I would definitely separate HT system from 2ch stereo:
Use for 2ch stereo your main Soliloquy 5.3.
Get for HT some cheap and descent monitors.
Try to mate used passive McCormack line drive($325) with used Bryston 3b-st($900).
If you cannot separate HT from music it'll still work with two sets of speaker wires running from your HT receiver and from your power amp. Make sure that receiver and amps are not on both at the same time.
Use for 2ch stereo your main Soliloquy 5.3.
Get for HT some cheap and descent monitors.
Try to mate used passive McCormack line drive($325) with used Bryston 3b-st($900).
If you cannot separate HT from music it'll still work with two sets of speaker wires running from your HT receiver and from your power amp. Make sure that receiver and amps are not on both at the same time.