Not sure what your mentor told u. But I go by this classification (mostly similar to yours):
1) The closest friend: who can tell whether u r projecting the right picture of ur personality. Smbody, who can point out “Hey, why don’t u mention that incident?”

2)The BSchool guy: (Alum,current student)These are the guys who have been through the process; they know what it takes to get through.

3)The Grammarian: Try getting  in touch with your English school-teacher, your journalist aunt or may be your college-magazine student editor: somebody whose grasp on the language is impeccable. This person can point out errors of flow and grammar.

4)The colleague: Somebody who know you in professional capacity. (Your recommender may be one of the best choices for this.) You may choose to handover only the essays on professional topics to this person.(if you dont want to reveal your personal side to him.)

5) The Adcom Eye: Somebody who knows u only thru chats/mails. Whose only window to know u will be your essays. This is important as this will be the view the adcom will have to your candidature. In most cases, this would be a co-applicant, wom u have met online. (Of course, do ur homework on this person b4 u choose to handover ur essays to him.)

This surely is not a non-overlapping classification. Your best friend can be your colleague as well as a master of language. The B-school guy you get to pick may not know u first-hand and can serve the purpose of the adcom eye.

Final advice: Don’t drown yourself in a sea of reviews. Different people will have different opinions, but your application is your story; it’s your opinion that matters most. Make sure that u don’t lose your voice that’s coming out of ur essays. I, too, have used many reviewers for my Tuck and Darden essays and I know that I have ignored many,many of those review-comments because I felt that incorporating those may have affected the message I wanted to deliver.

Please note this is strictly what I feel works for me. Some Gurus strictly advise against having more than two reviewers.  ( As you may have noticed, I too would prefer fewer reviewers, if the multiple roles listed above can be played by a single person.)

Speed of time == 5 seconds/second!!
Now this is what I’m feeling these days!! Time is running out so fast..

It feels like yesterday, when I was talking to ahembea “With September starting tonorrow, every deadline would be “next month!!”". I find it hard to believe that 10 days have already passed and I’ve not achieved much. I know everyone around is feeling the same.. September is perhaps the fastest disappearing month for R1 applicants. (And perhaps December the slowest, when the results take their own sweet time to appear)

Meanwhile, here’re a few highlights:

• Have got my scores sent to Ross, Tuck and Darden. Amongst my target schools, I had already sent the scores to ISB and Emory on the G-day. Will wait for Duke. (See next point.)
• Duke is confusing me. The info regarding the no-cosigner loan on their website has changed from “guaranteed loans without a US cosigner ” to ” Information about the International Student Loan is forthcoming.” What does this mean?? Are they planning to discontinue their “International Student Loan “??
  My apping to Fuqua will depend on answer to this Question. I’ve written to them, but no response yet.
  (FAQs page still confirms theavailability, but I’ll trust the finaid site more)
• Talked to my recommenders:: Had told my boss even before writing GMAT. Needed to talk to two more. One of them, an ISB grad, is a program manager in my team.. He’s a great guy to talk to!!  I discussed the feasibility and practically of B-school targets and post-MBA goals with him. He’s ready to write a reco for me and to review my essays as well!!
  Today called upp my third recomender too. She too is happy to write a reco for me. She’s my supervisor from one of my extra-curricular invovements. And since it was she. who recommended me for one of the leadership positions in the organisation, I’m sure she’ll write a gr8 reco here too.
• Transcripts:: Stll trying to get hold of a junior to get these. If anything doesn’t crystallise in next 6-7 days, I guess I’ll have to make a trip to my alma-mater myself.. That has been a dream for long, but I don’t think that I’m in a position to afford that luxury at this stage.
• Goals-essay:: First draft mostly done.. Though need to add the “Why MBA” and “WHy now” part to it in addition to “Why school X” for  each school. This is the essay that needs to undergo a reality check by a few experts. (And may need a good amount of overhaul in case I’m not specific enough.)
• Tuck essays:: Leadership essay and Constructive criticism :::: first draft done.
  Personal deadline for rest of the first drafts:: Sept 13.
• Ross essays::
  Developing outlines for “alternate career” and “most challenging time” essays.
  Personal deadline for all first drafts:: Sept 16.

Hope I’m able to stick to these deadlines. Given the shape of the drafts that I’ve ready, I know that they need a lot of polishing as of now before they can be even sent to be reviewed by some of my close friends.

BTW, if anybody gets to know anything confirmed about Duke Interational Loan, do let me know.