Not even going to comment on the Turtle Wax Black Box scheme.
Be very careful. I highly recommend against them. All it needs is a small piece of dirt, grit and you're causing anything from micromarring, which you really can't see until you put it under lights, to even large scratches.
I've used the Power Cone in the past and wasn't really that impressed. I guess it's better than by hand but it's important to have a very powerful electric drill, not a battery operated drill.
I'm quite positive that the OEM wheels are clearcoated. This means you are not going to use any metal polish on them. If they are clearcoated than it means you need to treat them exactly like paint.
Exactly. Blowing the car dry is the best method to reduce any chance of inducing damage. Possibly following up with a quality QD and MF to enhance the shine and remove any minor water spots. I used a blow dryer for a long time and recently upgraded to the Master Blaster. It's one of my favorite purchases for detailing items. It's just that badass. It had two 4 hp motors (8 hp) that can be turned on and off separately. It's kind of expensive at $309 but you can get a 15% discount on it with free shipping.
Otherwise Toro makes an electric leaf blower that is the most powerful electric leaf blower out. It's ~$100. I used an Echo backpack leaf blower. However a lot of people claim after a while, as the blower ages, since it's a two stroke the exhaust will start to put a very small amount of oil mist on the finish. Personally, I never experienced anything like that with two different Echo backpack leaf blowers.