1) WICHE is a contract seat with specific states: Arizona, Hawaii, Montana, Nevada, New Mexico, North Dakota,or Wyoming. This means you can potentially get IS tuition if you are from these states. If not, you got accepted as an OOS (out-of-state) resident and will have to pay the OOS costs.
2) Rankings are based on internal rankings and are essentially useless. They will not be able to tell you how great of a school OSU is what-so-ever, and nobody that I know of puts any stock in them. To me, you should rank schools by 1) Cost (Seriously, 100,000 difference doesn't seem like a lot.... until the interest kicks in and your now talking about a $300,000 difference...). In my mind this triumphs over most everything else and 2) Fit. Go tour the school, talk to students, professors, etc. Do you like the curriculum? The location? What kind of clinical rotations do they have, and what kind of opportunities do they have?