Actually, as part of the tuition, we all get:
A 13 inch Macbook Pro with retina display. 2.6 GHz Intel Core i5, 8GB 1600mHz DDR3 Memory.
Pretty sure you will get something similar (or better). So, DO NOT buy your own laptop, you will get the laptop on the first week of school.
P.S.: This is actually one of the reasons why MWU-IL is relatively more expensive compared to other schools. The "price tag" is inclusive: You don't have to worry about collecting teeth, laptop, loupes, cadavers, and everything else you need in sim clinic. In addition, you don't have to buy any expensive textbooks. You can print comprehensive lecture notes available to you via student portal and do well in class and boards.