@lifeatsea Getting fit for Raleigh has been covered many many times on this forum but one thing is clear that whatever regime you decide on it has to be tailored to suite yourself. Some can swim like an eel but can't run while other can do 50 press-ups and can only manage a doggy-paddle in the shallow end. Focus on your short comings but not to the point where you forsake everything else.
Here is your starter for 10
I'm at Raleigh right now. Regular workouts will help you in PT. The 1.5 miler RNFA (maximum 13:56 for young males) is easy, but do lots of running beforehand. Aim for under 11 minutes as you'll need to do the RNFT in 11:09 or under in week 5.
Practice press-ups, burpees, squat thrusts, star jumps and bear crawls. PTIs love them. Definitely incorporate swimming as well, as you have the NST and swim IMF sessions