hey Frog Guy, since your going in-sump, you have quite a few options, I would howver reccomend putting a Urchin Pro on it, same thing as a remora pro, just in-sump. They are rock solid skimmers. If you want to see some in action, head up to CB pets, they have at least 4 or 5 of them running in their sumps. (they also sell them.)

You may also want to hit Dan, or one of the other guys that do acrylic work here to build a custom skimmer for you.

good advice for heater, divide your needs in half, and buy two, that way if one fails, you still have something. (but you probably won't even need it in texas, nevertheless, great thing to have around.