[fly]

First of all your taking a big step, but a good one since you have the polishing part down. The 4.5 gal. set up will only let you plate small parts since the container is only 4.5 gallons. If you can find a plater near by and see if they will let you look around, would be the best thing you could do. Even better is find a plater that is small like me (60 gallon tanks) and see how the small time platers do it.