This is my opinion only - I'm sure others will chime in as well -
1. I think you can condense what you need to say in 1/2 page.
I had an English teacher in highschool that made me write, then write, then write again. By the 3rd draft, all the extra was out. That might be a good approach to the 1/2 page. What do you want your reader to know about you?
2. Your mentor's suggestion is a good one. A white paper developed by you would be awesome. Before submitting, send it out in draft form and final form to 2 or 3 people via PM or email and get them to critique and look for errors. Fresh eyes are always good. Don't be intimidated, ask.
3. When making decisions, trust your self. Nothing is set in stone. Cover all your bases, seeking advice as you need it, and when the time comes, make your decision. You are prepared.
