How about this: 4' x 18" metal wire shelving You can hang at least two and possibly 3 2-bulb fluorescent light fixtures off each shelf, for 4 to 6 bulbs per shelf. Maybe even 8 - Home Depot used to carry a 4.25" wide 2-bulb T-8 fixture for around $15. I'm not sure if they still carry it since I think it is the one that was recalled this past spring. If you can still get those, you MIGHT be able to get 4 of those per shelf - it's a total of 17" in width, that should just barely fit between the posts. They have another fixture for about the same price but I'm not sure how wide it is. I have cheap Lights of America fixtures from Valdemart. They are 7" wide so 2 of those will fit. Lowe's carries a 2-bulb T8 fixture for around ummmm ... I think it's $18 or so. It is 5.5" wide, so only 3 of those will fit. Yes, I am talking about T8 fixtures here. Yes, they're not as glow-y as T5s. But they are much cheaper, and you can overdrive them very easily (if you make sure to get something with a ballast in them that CAN be overdriven). That means avoiding anything that has a magnetic ballast, like the ultra cheap $12 T-12 2-bulb fixtures both HD and Lowe's are selling these days. Google "Overdriving T8 fluorescents" for details, or I can post some links I have. T8s are just tons cheaper than T5s so even if you have to cram more of them in there you'd still come out ahead. Especially if you take the leap into overdriving. Home Despot also has a 48"x18" shelf unit available, it has an extra shelf (6 to Lowe's 5) but it costs more: Home Despot's 6 shelf 48" wide 18" deep shelving unit The extra shelf could come in handy. I know they're narrower by 6", but they're wider by a foot so ... for whatever that's worth. The space I have is only 21" deep so that's my limit. I can put 2 standard size flats next to each other on these shelves and they'll hang over by about an inch on each side. You can fit 4 standard flats on each 48x18 shelf whether you put them along or across the shelves. Seems to me a 21" to 22" width would be ideal for growers, but that's not how they make 'em. If you can afford the T5s, by all means, go for it. But T8s in overdrive will get you there too.

check out this post on container soils If you have a black thumb, I recommend you give the gritty mix a try for those species. they should all thrive. You can get quite a bit of advice on container media over there on the container forum. The gritty mix is a nice aggregate medium, but some people have a hard time finding all the ingredients. It's the principles in that post that matter. I have used all sorts of aggregate to make different aggregate media and it's possible to make pretty much anything in that size range to work. I like to use pumice, bark, and gravel for some Sanseverias, Echeverias, and jades. For plants that are really picky about water I use gravel and calcined clay. I incorporate some controlled release fertilizer (CRF) and water with a mild fertilizer solution. It's pretty simple and difficult to overwater, though overwatering is not unheard of even with aggregate media.

Sure, it's usable, but how much impact it will have on your plants is another question. This is very hard to gauge on LED lights, which is why I generally avoid them. Here is the product I use: http://www.homedepot.com/p/Philips-100W-Equivalent-Daylight-Deluxe-T2-Twister-CFL-Light-Bulb-4-Pack-E-433557/204855102 It screws right into a regular desk lamp. A good testing time for lights is 12 hours on, 12 off. After that, you can adjust on what you feel your plants need.

Were you going to post a picture? Just be patient. Plants know what to do. I suppose you could feed lightly if in the growing season for any of them.