You could probably do it in Austin, San Antonio, Dallas or Houston. It's always good to bring dollars to the area.
The number of delegates is based on the number of republican votes in the governor's race, so given a 4-way race, the number may be low enough to hold it elsewhere in 2008. I think they could have as many as 11,000 delegates this time(my guess is 6,000 or so will show up).
I am led to believe it rotates. Next two years Fort Worth. Last year and this S. A. For whqat it's worth I am presently sitting along the wall behind SD 7.