Personally, I use a folding workmate with my RCBS Rockchucker bolted to a piece of 2x8 which is secured to the top of the workmate. Fold it up and stand it up to store it when not in use.
But MOST IMPORTANTLY:
Remember, @Cheflife15 , you're the QUALITY CONTROL guy at your new ammo factory.
Make it right - EVERY time!
Your well-being is behind every round you make and shoot.
I have the same tumbler, it works great. It comes with a sort of slotted bowl for media separation, but I recommend a case media separator if you will be polishing a lot of brass.