Are you on days or nights? And yes, I know a 12 hour shift is usually more like 13-14 when all is said and done. I work panama nights and I do the three day a week program when I'm stateside. I just go before work one or two days during the week and get the other work during my off days. You're honestly off what amounts to every other day (15 out of 30, essentially). With that in mind, you'd probably end up going to the gym on different days of the week depending on which ones are your off days, but as long as you're flexible and understand you can still get strong lifting on a monday one week and a tuesday the next week, etc., etc., you'll be fine. Just make it happen and you'll be good. If that makes sense. If you have to do PT, just adjust your assitance volume a little until your body adapts. No use looking like a fag at PT just because you have to squat. As an NCO, I understand we all have our personal goals, but I know in my case, my ass is on the line if my junior enlisted don't pass their PFT's. Just play the game with PT and get your 5/3/1 on.
Honestly, all these 5/3/1 questions can all be answered with, "Quit being a pussy and just use some common fucking sense."
Oh, and you may have to give up some partying. What a shame, huh??