I'm in my last semester with 90 hr preceptorship, clinicals, class, work and planning a wedding.
I don't work full time, I work flexi usually working 2-3 12's a week. This is where you are only required to work 2 days a month, but your pay is increased 25% d/t not having insurance. Now I haven't started my preceptorship yet but I don't think it'll be too hard once I start it because I only have to do 7 12 hour shifts! I could do that in 2 weeks! There will be tons of time to work, have fun, clinicals, and study for me!
You should be able to do it, you just have to prioritize your time well and when it's time to study, IT'S TIME TO STUDY! Turn off the TV, radio, and go in a private place and study. Get it right the first time! Usually what I do when I study is take notes on to a piece of paper and when I'm working I will periodically glance at the paper and just get everything in my head. You would be amazed how much I can study during a 12 hour shift without even sitting down!
Good luck to you.