Thanks everyone.
APAC- glad to see another local guy around
JohnJon- I built the stand as I went along, and didn't keep measurements of the parts I used. I just kind of did it on the fly. The stand is made out of oak.
Porkchop- I have about 4-5" above the sump between the joists to the upper part of the stand. It is enough room to get the filter pads out for cleaning, but certainly not the most convenient. I don't have a thread on my drip system, but here is a link to the drip system I modeled mine after:
http://www.monsterfishkeepers.com/forums/showthread.php?t=27474&highlight=drip+system
There are two big differences between my drip system and the one in the above thread. First, my tap water has chloramines, so I have to use a different and unfortunately more expensive type of carbon filter to break the chloramines down (
http://www.thefilterguys.biz/chloramine_filters.htm). The result of this breakdown after passing through the chloramine filter is that I now have water with small amounts of ammonia in it. I drip this water directly into the tank, and my biological filtration takes care of the ammonia from the chloramine breakdown. The downside to this is that I essentially am dripping in water that contains nitrates (the end product of the ammonia/nitrogen cycle), so I never will be able to acheive 0 nitrates. I think my tank runs about 10ppm on nitrates most of the time, which is pretty decent all things considered.
I also use a brass pressure regulator instead of the one in the linked thread. I used the cheap plastic one first, and it lasted about 1 month before it broke and leaked a fair amount of water into my crawl space. Luckily I caught it within 24 hours. The brass pressure regulator was more expensive ($50-80), but it has been functioning for over two years without any problems.