Help me choose a light

[Call_Me_Bob]

hi! so im planning to switch from a shelving units with t12 flouros to a table/bench growing area. currently i have a 4 foot metal shelf that has 4 tiers. however, only 2 are usable because the bottom is basically on the floor and its just too low. and the top tier is 7ft in the air, so too high to take care of things. so i basically only have 2 4ft shelves for all of my plants. it was TIGHT last winter, and im 100% sure they wont all fit back in. So i was thinking about getting a plastic 8' greenhouse bench or just a standard 8' sturdy plastic table. either one would be wider then the what i have now. and they would be at a better height so its easier to take care of the plants and such. and im also planning on adding bleacher light tiers or shelves to put on the bench/table. so it would add more space to grow on and would also give me different light levels. and finally, im planning on hanging a sheet of chicken wire on the wall directly behind the bench/table so i can hang pots as well.

id like to hang 1 or 2 lights from the ceiling over the plants. i want them to be strong enough that they can be a few feet away from the plants. i grow an assortment of things, but the light levels needed range from Phal to Catt

here is a diagram i drew up.. also, if anyone has any good idea on what to do so i can water without taking the plants to the bathtub, PLEASE let me know!


Untitled by orchidman10, on Flickr
any thoughts on what type of light is best? thanks!