Tyler, check out my Resource Page at
http://www.brainyday.com/jared/aquarium/info.htm There are lots of organized links to good info. We had success both with small-grain gravel mixed with some Aquarium Pharmaceutical's First Layer Pure Laterite, as well as our current setup which is all Flourite.
Look into DIY CO2 (see Cathy H's Primer linked on my page) and Seachem's Flourish Excel, a non-CO2 carbon source (see link there). If you use CO2 it's best to keep surface agitation down to a slight movement to prevent the CO2 from escaping. CO2 is said to be most beneficial with tanks at roughly 2-2.5 watts/gal and up. If you have specific questions about CO2 chemisty, just ask.
It's a good idea to start with a nice % of fast-growing stem plants. They will help get the tank in balance over any algae. Later you can replace some/all of the stem plants with others if you want to. It will also give you time to see what species do well, which you like, which look good and where, etc.
For livestock I suggest some guidelines:
1. Don't overstock. I suggest a small to moderate fish load.
2. If you mix species, get compatible fish
3. Make sure they don't eat plants

4. I agree with you that it's nice to have species that swim/stay at different heights -- top, middle and bottom. That would make good use of your tank space.
5. True SAE's are great, if you can find them.
6. Blue rams are fairly delicate -- we lost 3 our our 4 because the lfs didn't tell us they had just gotten them, didn't medicate, and subsequently lost most of theirs too. Make sure the store has had them for a while.
HTH,
Jared