Vegas x2! I've actually never raced there, but I helped out crewing there once (first year the new track was open). If nothing else the rain issue should be eliminated there. Maybe even get it scheduled for the week before the NHRA national event, which is itself just before the SEMA show. A few trucks (like DirtyMax) will be in SEMA anyway, so they could probably be stored down there for the week before the show.
I'll hopefully be testing the track out in a few weeks for a big $ bracket race down there.