I would use everything accept for the plastic cleaner and black mark cleaner. Everything else I would at least give a shot. I am very happy with 303 as a conditioner so that is the one thing that I think might be tough to beat. Also, what about a bilge cleaner? I usually use simple green and dawn dish soap and then leverage for the shine, but my bilge gets dirty fast.
I am still on my first Leverage application and I put it on the First week in April. I simply spray the boat with distilled water and wipe it off with a microfiber cloth and she is as shiny as she was when I applied. I am thinking of doing a new coat the week of the loto shootout because I will be down for the whole week. But leverage is some sweet stuff.
If your other products work as good as the leverage you will be a very busy man!!