Need some general advice please.

I recently went through MEPs and took the ASVAB (scored a 98) with the intent of going into the Navy. I ended up signing into the DEP program with the Navy as a Nuke. My ship date was a while out so it gave me some time to look into other stuff and I have realized that I much rather join the Air Force for various reasons.

I applied on the Air Force website and someone called me to get some basic information. There are only a couple jobs in the Air Force that I actually really want to do (Cyber warfare, pharmacy technician) and I've heard that you don't get a whole lot of say in which ones you{d get and because of that I hesitate to separate from the DEP at the Navy. I am wondering what would be the best way to proceed. Can a recruiter in the Air Force at least give you a good idea of what kind of job you might be able to secure? Side note (is it bad to talk to another branch while in a branchs DEP?)