Thanks for the replies!
I don't think I am going to buy the GP11 preamp but I was scouring the local Guitar Center and found these.
Two old Trace Elliot cabs that I got for a steal. they were sitting there for months and were not selling due to the ohms being mismatched. The bottom cab is a 8ohm 18" that I don't know the model of.( The info is worn off on the back plate) and the top is a 1044H. These go quite nicely with my early 90's SWR Big Ben and the Alembic F1-X.
Very nice! Biamping with the crossover at 70hz and I can drive the daylights out of them and they will not break up. Beautiful sound in the low mids that I never quite heard before and the highs are clear and effortless. Not harsh like a lot of horns. Of course, two 18's move some serious air and I got lowend to spare. Can't wait to get this to rehearsal!