I'm glad to hear that you had a successful installation experience and that your accuracy at the longer distances seems fairly good.
I have two follow on suggestions for you if you want to improve the accuracy a bit more. I created and published an article on how to set up and get the most out of your HHA Optimizer Speed Dial. I beleive it was titled something about an HHA Optimizer Speed Dial Review, but if you search back on the LRH PSE TAC15
articles you'll find it.
Read it carefully and follow the instructions because it will eliminate using hand drawn lines on your Speed Dial Tape and really tune in the long yardages.
Secondly, your observations regarding the wind are absolutely correct and the wind is something that we must always be aware of when shooting long range shots. No matter what anybody tells you, there's no way of getting around this impact.
You can gain your final accuracy through testing and marking your arrow spines and then aligning your arrow nocks to either the stiff side ot weak side of each arrow spine. It doesn't matter which one you use just as long as it's always the same for each arrow. I prefer the stiff side, as do most archers who have years of experience building their own, but statistically it doesn't matter.