Hi Brett!
Bu Gan Tang is a good choice to use along with what you have on board. You Gui Wan is another one I've used. If Dasuquin helped his GI, then he should be able to handle those tonics. I also use XHLD for dogs that have periodic flare ups while their cruciates are remodeling, but I think you were worried his system couldn't handle that. Maybe with BGT he would?
I find it takes 6 months, start to finish, to heal a cruciate. I guess surgery would be your choice if you couldn't wait that long. The herbs will at least hopefully help him heal properly so he doesn't become one of those dogs that gets even worse from the surgery if you go that route.
You'd want to double check with the surgeon to ensure the surgery doesn't mar his athletic performance. From their perspective, you don't have a choice, but with holistic care, I think you do, even with these delays in recovery (which are probably tied to his high energy and activity).
For points, I just find what's active. Look for Shao Yang points to sedate: BL 19, GB 34, GB 30, GB 27, GB 25. BL 40 (tonify) may help. ST 37 (perhaps even stim? since you want to exteriorize Blood and Yang, but want to tonify Blood so there is something to circulate). These are just guesses, but let your dog tell you what he needs needled, and let the pulse be your guide regarding how to stimulate them
Steve