Akshar,
I also interviewed for the program as a senior in high school, and I was not accepted. At that time, I knew that I wanted to go into medicine, and I wanted the security of a combined program, so I was very disappointed. But now, after applying and being accepted via the traditional route, I have this advice: Don't do it.
If you are out of state (like I was), the program is about 320 grand in tuition alone; it is half as much for instate, but that is still costly for a public school. More importantly, you will be missing out on the college experience to a large extent. Also, while it seems like an exciting option right now, quite frankly, it isn't a very good undergrad or med school. I don't say this to be rude or put down anyone, I know that some very smart students are in the program. But after seeing the undergrad facilities, the main hospital, and learning about the resources and funding for the school (along with opportunities for research, and the caliber of the clinical sites), I do feel that the institution profits MUCH more from the students than the students do from the program. In regards to reputation, the school posted a 25% attrition rate when I applied.
Since you are motivated enough to be considering this option, I am sure you are also willing to put in the work to do very well in college and obtain entrance the traditional route to a better program, whether in Missouri or elsewhere. There's a lot more to college besides getting into med school, and you might be selling yourself short by missing out on some great experiences.
Sorry for the long and rambling post, but I hope it was helpful. If you have other questions, feel free to PM me: I have several Texan friends who are in the program, and they have had plenty to say about it.
Good luck with whatever you decide to do!