Don't let it intimidate you, you have a stellar looking package. Just hit the right points and above all else make sure the whole package is complete. I'm a lowely undergrad as well and was picked up first round. I made sure my package was complete and kept in close contact with my OR. I made sure if he needed a document signed and scanned it was done within the hour. It kept me fresh on his mind.
In my motivational statement I spoke to how as an enlisted Airmen I always rose to the occasion and assumed leadership. It helped I got awards to back it up.
On the interviews I made sure to highlight that as a reserve officer I fully expected to do work outside drill weekends, would be expected to deploy, and would transition from being the go-to performer to the go-to-mentor. These are leadership roles were applying for.
Again, I appreciate the insight and more importantly, I agree with you wholeheartedly. Like you, I’m the type that gets its done right and quickly so that the OR knows that I’m a serious and motivated candidate.
In regards to the motivational statement, I have not put too much thought into it as I am focused on the 25m target (medical), but reading through your synopsis really put things into perspective. Simple, yet meaningful points to drive home your background and what you bring to the table, as well as your desire to be leader in the Navy and why you are pursuing your specific designator. I believe the leadership portion is key. Maybe I will start to put a few ideas down on paper so that I have a frame of reference when the time comes.