Thanks for all the advise guys! The BO and I have gotten together now that he's here, and given everything we know about him, are going to try him on nightly turnout for a bit and see if that works for him. If he starts weaving, I'll switch him over to pasture, and will definitely have him on pasture board through the winter, when bugs aren't bad and show season is over. He'll also be starting on MSM,Garlic and B1, so hopefully that will help him as well. We were told that with daily turnout he had no weaving, so I'm hoping that will solve it... like I said, I had no problems putting him on pasture board if the weaving becomes an issue.
Smartpak called me this morning, and the woman I spoke with was very helpful. She actually said that the MSM was a key ingredient that they use in the Smartbug Off formula, as it helps with the inflammation. My barn owner gave me the names of two other supplements to track down, but they were both out of budget, unless I cut out another supplement, which I'd rather not. I'll try these for a month or two to see how they work, and adjust from there.