For the SKY, I purchased BMW pucks that hold in the slot and are never removed, and that may not have come up in your discussions yet. However, the BMW pucks always attached work on my SKY, but they did fit well on my Solstice, so I have actual hockey pucks in the trunk in case the shop needs to use them for any work on the Solstice.
I really like Discount Tires with their balance/rotation plan. But the manager didn't know about pucks. By your paragraph above, I understand that BMW pucks worked on your Sky, and not the Solstice. How did you permanently attach the Pucks to the Sky? Is it like an insertion thing, or like double tape fastened. Those pucks might be my best bet and Discount Tire.
Did you ask DT to hand torque your lugs? Someone mentioned that the air gun torque caused some lugs to snap when they tried taking them off.
If I knew what jacks to get, what pucks to get, what stands to get, and how to safely Jack all corners of the Sky without twisting the seams... I'd do it myself to save the headache of it all, as someone already mentioned.
But I might do more damage than a shop doing one tire at a time. Lol. Just the GMC Buick dealer's one time proper lift caused a dash creak-rattle that I hope works itself out... lol. I'd probably cause a chorus of new sounds. Hahaha.
Here's a picture of a tire when money is no object. I think I'll go with Michelin though.