The mists have cleared. I have 2x M1A's and 1x B2A. Following all you're brilliant advice I think i'll run the UPA's 1 or 2 per side (depending on requirements) from the M28Q in stereo using an I/O panel and use one of the QSC ex1250's that came with the system to run the subs. Getting rid of the H&H beast will be a blessing. That thing weighs a ton.
On a different note (Gordon), how does the M28Q perform. Are you happy with it in your system? I know it's very slightly overpowered for the UPA's but does it follow the same idea as a lower powered amp, ie., turn amp volume up full and let the processor warn you when it's the level gets too much?
If you are running the same system as me (4 tops 2 subs) what capacity venues would you use the system for? And what kind of jobs do you cover in terms of speech/music etc.
Thanks for all the help everyone. Very happy to be here and problem solved!