That first sentence has too much going on. I think you should just say:
The fact that Bentley University is one of the most preeminent business schools appealed to me, and as I researched this school I discovered
and helped me decide that I would be applying to Bentley due to the
the university could present me with
available to me.
having trouble deciding what's vital and what is unimportant to include.
List the things you tell the reader. Only include the significant things. Choose the 3 most important. Write a sentence about each. Strategically, it is tough to try to get a reader to retain more than three things. Let the reader see how serious you are about Bentley and the opportunities you will take advantage of. Be specific.