If it works for you then I won't argue with experience!
I wouldn't have thought of putting the spring tensioner on the top run of chain.
I would love to see some more photos!
I'd like to know how low you got the engine. Is there any noise from the chain when the suspension is compressed? Also does the suspension compress (squat) under power? It does squat a little under power, I think I will have to get a smaller spring, at full throttle the chain will get a little slack in it, and it will jerk once or twice. So I'm going to try a shorter spring. One of the pictures has an L bracket to hook the spring to