Don't polish inside your garage, not only make a filthy mess but flying parts will do a lot of damage.

I place a very large piece of cardboard in my driveway to sit the buffer on. Prevents buffer from scooting about and when done for the day, easy to dispose of debris generated by buffer and polish fluff.

Spend the money to buy a great buffer and stand. Will be one of the best tools you ever bought and will save you hours of grief and effort. I do very well with a 3/4 hp Baldor and heavy cast iron stand.

I spent some 250 hours doing every inch(there is a lot of them on this car) of stainless on our 300 B. Much of which was spent learning. I was re-doing what I had paid a professional to do and had never been satisfied with quality.

Now am often axed, who did your stainless and would you do mine. No way,,,it's a labor of love,,,never would wish to do it for a living.

Wear heavy clothing with no loose ends that might tangle in the wheel, heavy leather gloves, apron, full face shield, and very important, good ear protection. I use noise cancelling Bluetooth earphones so can listen to radio/music while protecting ears.

Just as with auto body work,, the time preparing the surface with coolly labor is just as if not more important than than the final painting or polishing to achieve superior results

Read some books or watch some UTubes. It's a skill that you will use a lifetime and likely save you thousands of dollars.