Im biased toward Dallas, but for good reasons:
It makes it easier to keep Ray envolved.
Many Interstate highways converge here.
And- for those with money to singe, there's DFW of LOVE Field.

I still wouldnt mind having it out by lake Travis
in Austin- that would be nice.

There are numerous Church-retreat facilities in very
scenic parts of Texas. Im sure some of them could cater
to a secular gathering as long as they don't think we
are evil! :)

Ryan