'We hope you will find our qualifications to be well-organized, concise, and most of all, to exceed your expectations.'
This sentence is not strictly ungrammatical, but it does have its difficulties. The problem is that the first and third of your descriptors are autonomous infinitive clauses, while the second depends upon the first.
The first one, 'to be well-organized', is fine. The second one, 'concise', essentially piggy-backs upon the first, which is to say that there is an implied to be before it. However, the third, 'to exceed your expectations', breaks the sequence by replacing the implied to be with 'to exceed'.
Thus, if we extrapolate the sentence to include the implied information, we get the following: 'We hope you will find our qualifications to be well-organized, to be concise, and most of all, to exceed your expectations.' There is nothing particularly objectionable about this sentence, because, with the addition of the previously-implied to be, the reader no longer expects to be to precede the third descriptor.
Another way to improve the sentence is to replace the third descriptor with a prepositional phrase: 'We hope you will find our qualifications to be well-organized, concise, and beyond your expectations.' This works because the phrase 'to be beyond your expectations' is relatively smooth, whereas 'to be to exceed your expectations' is quite clunky.
Hopefully that makes sense. Post a comment if anything is unclear.