A few general questions

Got a few things Ive been thinking about doing for the summer.
First off, I was thinking about trying to talk my parents into buying a tower but I can't seem to find one that looks good for under 1700 or so. The best looking one for the price I've found is the aerial airborne tower. Does anyone have any other recommendations?

Next I was thinking about adding some ballast to get some bigger wake but I'm not sure how much our boat can hold. It's an ebbtide campione 210. I've considered two options really. First was a 1500 lb sac that would take up most of the space in the boat. Second was to use bags to fill the ski locker, cubbies beside the motor, and maybe some up front. Does even a few hundred PBS of ballast make a noticable difference or would I be wasting time?

Also is it possibl to add perfect pass to a boat?