I didn't mean to attack you, Just felt as if the responses provided were, less than appreciative.
I think that you could easily run with just cheap shop lights if you wanted, regular 30 watt range T8 I'm assuming?
As for the DIY co2, 3 bottles, few feet of airline, a few packets of dry yeast, a few pounds of sugar, and some mildly warm water. Other than that, a drop checker isn't required but it is a cheap and good accessory. air stone for easy cheap diffuser.
Mix 3/4- 2 cups of sugar with roughly equal parts water, add in a teaspoon or so of yeast. multiple bottles could be used in rotation. using that recipe I'm on the last few days of a month of decent Co2 out of 2 bottles.
more yeast faster reaction, less yeast slower longer lasting reaction.
and it would be very easy to conceal the bottles in a box if aesthetics are an issue.
Oh and also, Ebay, Amazon, local Store used equipment sections. these are great places to find a cheaper decent CO2 system for a much more agreeable price.
and as for the lighting issue, Have you considered just keeping the Shoplights running to see how well they perform?
Hope to have provided some useful information.