Unless something has changed in the past year, yes you only have to have the prerequisites done in order to apply to get on the Maricopa traditional waitlist. It might take a few semesters of waiting to get into the program, so you can use that time to finish up your coreqs and perhaps work on prereqs for a CEP program if you want to go that route.
There may be a shorter wait for the LPN program, I'm not sure. Personally, my timeline was: I turned in my traditional application in May 2017, finished up my coreqs and prereqs for a CEP program by December, and started Block 1 in August 2018.
Good luck as you start your journey to become a nurse!
