For a 55g planted?
http://www.aquatraders.com/48-inch-4x54W-T5-Aquarium-Light-Fixture-p/52305p.htm
http://www.ebay.ca/itm/AQUATEK-CO2-...706?pt=LH_DefaultDomain_0&hash=item35ba7bf1da
There's your lights and 90% of your co2 setup for under 200$. You don't need any fancy substrate (people say you do... you don't), just grab root tabs if you have any root-feeder plants (like Swords).
The light looks fine but the co2 regulator is too small for a 55. And soil is needed for a lot of the more desirable plants but if you just want plants that don't need it then I think it'll be fine
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