A lot of this depends on what you want to keep in it.
If you want to keep corals then you need to look at the different types available and decide which types you prefer.
SPS- Small Polyp Stony corals - Require high light.
LPS- Large Polyp Stony corals - Require moderate light.
These are also called hard corals because of their hard skeletons.
Softies, Mushrooms, Zoos, polyps- Requre moderate to low light.
Anemones- Require high light and a mature tank.
Clams- Require high light and a mature tank.
Fish- Really don't care about lighting, and will do ok in high, moderat, low, or no lighting.
Your filtration and water flow is also somewhat determined by what types of corals you want to keep. SPS generally requires very high filtration with a lot of flow. They thrive in a nutrient poor environment. LPS on the other hand generally like a bit more nutrients in the water, and less flow, as the longer polpys will get torn in a high-flow area.
Hit some sites and some fish stores and figure out what types you like then we'll be able to help with some suggestions.
B