I've been checking out photos of your SunGlo setup for months (I've been drooling over your orchids, too). My husband transferred my T5s from my orchid room to my new greenhouse this afternoon. The electrician already had everything wired up that he thought I would need, so I must have been reading your mind.....I have the additional outlets and light switch at the door, same as you. I have already experienced some unwanted company that I'm guessing you are speaking of. Actually, the company was only 2 of our cats, but still, I didn't want them parading all over the benches. I caught them crawling in and out through the intake louvers, as you mentioned. The carpenter had some bench wire leftover, so I'll get something as you suggested rigged up. I'm gonna try to remember to open and close the black vents..from day to night and vice-versa, but my "rememberer" just ain't what it used to be, so that might be a challenge. I also like your idea of additional shelving, so I'm gonna go shopping soon. I wasn't as lucky as you, as far as "extras" go. We bought my gh from a different company than you, and the extras weren't included in our deal. I didn't get benches, so I had to have those built, and neither did I get a heater. I think I already have one that will work, though. I'll have it on hand, but the need for it will most likely be some months away...since I live in Al. You mentioned a timer...if you are speaking of the exaust fan timer, that was included. Other than that, no more extras. Now, if I can just get my orchids to bloom pretty like yours, naah, that'll be a LONG way down the road, if at all. I only have 1 yr. experinece under my belt. I'm still at the stage of trying not to kill plants.
Thanks for your help!