Hi Jasensmith,
I find your approach interesting. As you said you used ConVerbs plugins on individual tracks, I'd like to know if you mute the convolution reverb part inside your hybrid reverb in your master track or not. Or do you prefer having two early reflections blended?
I'm using MIRx as well and I'm quite happy with it. Though, I'm hesitate to expand my MIRx since I read it somewhere in this forum that the upgrade path from MIRx to MIR PRO / MIR PRO 24 and Room Packs is not available anymore. Moreover, MIRx is only limited to VSL instruments, which makes it rather difficult to mix other libraries or live recording with your VSL.
Anyway, thank you for your opinion. :)