Not a bad idea, thanks for the insights ! I think I do like the vertical wall rack, gets more lights under the skirt, better development more than likely .Go vertical!
View attachment 5204
Try to run them low enough you can passively cool them, or have your normal circulation fans blowing on them. With 3 I would put them just below canopy level at about 25-30W each, depending on what your main light draws. Depending on your style think about adding a rack too.