Thanks for all the tips coming in. Looks like I'll be needing baggy pants and a couple seats in the plane for the return flight!
I got my tickets for the San Antonio @ Houston game Baseline Riser 126 Row F near the away bench.
http://www.seats3d.com/nba/houston_rockets/
I'm happy with these seats to finish my trip.
Got my tickets for the Spurs @ Dallas game too, but it's up in the nose bleeds Upper Level Center Row F, but saving a little on these allowed me to spend a little more on the others.
Any tips for accommodation in Dallas, San Antonio or Houston? Central enough and with parking?