Hi,
One of the dive shops I know of are going to be there April 18th & 19th. Another place that is fun to dive and not too far away from Amarillo, Texas is Blue Hole in Santa Rosa New Mexico. Blue Hole is about 64f in temp, but 83 foot in depth and with AC it comes out to 108ft. Anyway, if you want I imagine you can arrange it with them to have some tanks there for you.