if just going FOWLR then you don't need a lot of expensive lighting, you
could go with a power compact around 55 or 65 watts and get by nicely, you
could even go with standard NO (normal output) fluorescent lighting. with
the PC lighting you could keep some mushroom corals and polyps that do
nicely with low light and they come in a lot of colors that compliment any
tank.

a power head or two for circulation and 4" of sand bed. you would need at
least 1.5 lbs of live rock per gallon (dependant on density of rock) of tank
size for your filtration along with the sand bed but you don't need
additional electrical filters. a heater to prevent temp fluctuations and
RO/DI water to top off with is also a great idea.

that should about cover the initial outlay.

kc