Help with future transfer decisions

So I decided to head to CC to save a few bucks & get some pre-requisites out of the way. I only want to be there for a year and I already know what I want to major in, (PR), so I have several questions:

1). The school I plan on transferring has guaranteed admission if I complete at least 24 credits. Should I be doing exactly 12 per semester?
2). Should I only be taking prerequisites? Or do electives matter?
3). If I only do pre reqs such as math, English, science etc. and no electives, will the university consider me a sophomore or an incomplete freshman?
4). When should I be getting in touch with the university I want to transfer to?

Here’s a pdf files that the university has posted to help decipher what will transfer but this only confused me more… http://studentsuccess.louisiana.edu/sites/studentsuccess/files/LA-Pub%20Rel.pdf