Job interview advice?

I’ve been working in a pharmacy for the past 4 years as an assistant, but I do not get enough shifts or make enough money. I’ve got an interview tomorrow with a different pharmacy, same position. The thing is, I love where I currently work and would like to keep working there. My plan is to have 2 jobs (trying to pay for college is harder than I thought). Anyway how do I bring this up with the interviewer in the most appealing way possible? Is it a strike against me if I go in and say I can only work on Tuesdays, Thursdays, Fridays and Sundays? I have a great resume and I study pharmacy in school, but I am a little worried that he will think I won’t be able to balance 2 jobs. Any tips?