Re: Motorized Cruiser Begginer!
You can use the one you have. The only advice I'd give you is to look at the downtube on whatever bike you are interested in using. Many bikes now do not use a round tube, they are more oval or egg shaped. Like the wallyworld Next bicycles. Other than that, let your freak flag fly. The only other thing is please, PLEASE, PLEASE. Clean up your cables. You don't have to trim them, but please keep them from flailing about like a peacock's tail. They can be routed without having to cut them down and look tidy.
Locktite. Learn it, Love it, Live it.