Weeeellllll, the current plus is what I ended up going with ( because after crawling all over the internet last night, I couldn't find any reasons why not). Hopefully it will be enough for the low and moderate light plants that we are hoping to grow, as the substrate floor is only 18 inches from the top. If it needs an additional light somewhere down the road, then we'll have to add in some extra.

Meanwhile, it is currently being lit by my "I can't see my stitches without a giant spotlight" lamp, that can go visit the plants if it needs to :D

Oh, and new plants!