I have to say, kinda sounds like your screwed. Either way ya go, you're gonna dump some dough into it. I'm personally going the HP30 route. If I were in your position, I'd simply the the HP30 with a truss system (most likely custom made, I haven't seen a prebuilt one). I just can't see any other cheaper solution...
"He is no fool who gives what he cannot keep to gain what he cannot lose"
I once slipped with a rotary wire brush that burned through my jeans and left a very nice deep gouge in my leg.
If it had been up a little higher, I'd have gone from a rooster to a hen.