I'm a current LECOM ISPer,
Since you're getting the books for free, then why not go for broke right. Keep in mind however that there are bound to be a few changes in the book list from this to next year. This year for example gross is using a new book, the ISP micro book has changed as well as the physio one, and unlike many other subjects you should always get the latest edition of whatever pharm book is needed.
With ISP you buy quite a few books for the first year, but in the second you simply re-use what you have and only need 2-3 new ones. I also do have many review books which are a big help. After reading Robbins path and getting every little detail it's nice to go to the BRS path and hone in on what's important.
As far as bookstores go LECOMs prices are right in line with B&N, Borders, etc. Since yours will be free you don't need to hunt through e-bay and amazon like the rest of us. 👍
If you want to come up just give me a weeks notice or so and I'll sign you up as a visitor so I can take you to the bookstore.
Incidently I'd just wait to get the books, unless you're not sure if the freeby deal will be there later. There are certain universal items that you learn in each disipline, but there are a lot of variations as to what's important in a given subject, depending on who's teaching it. So reading ahead really won't do yo any good. Besides you'd forget most of what you saw anyway, but that's a different subject.