Need advice about retake of the GMAT

Hello,

I've been a member for a while, and I figure I should start with some background. I just finished my undergraduate a semester early at like a second-tier, working my way in a career-oriented job where I now have management responsibilities, taking night classes. I have enrolled in the only MBA program I could find that allowed spring admits, which was the same school I got my BS from. I want to get into a top-tier school, got a 3.84-something graduating GPA, and already have a GMAT score from August 2008 of 700 (45Q 41V 5.5AWA).

About a month ago, I started studying for a retake, since a 700 is kind of pedestrian for a school like Harvard or Penn, mainly using MGMAT, this forum, and some OG-11 books, also taking practice tests on powerprep, and I burned one of my GMATPreps again too, and my scores were improving dramatically. I started out getting like 680-690 on MGMAT, my last one I was at like 730. Powerprep I had two 750s, like 50Q 41V and 48Q 43V or something like that.

In any event, I took the two GMATPreps, using the earlier version that was available on the thread, last saturday morning and sunday morning, both at 8am, mimicking test conditions as best as possible: taking it at another person's house, using laminated sheets of paper and dry erase instead of paper+pencil, using a stop watch to calculate break times, everything to simulate the real thing, and got a 770 (49Q 47V) on saturday and 770 (50Q 47V) on sunday.

These practice test scores, as they have been consistent and improving, lead me to believe that if I had another month I could possibly improve to 800, which has sort of been a goal of mine. At the very least it would lessen the chances of getting anything lower. Therefore, I have a few questions that were unavailable on MBA.com.

(1) what do b-school admins see when it shows that I took the GMAT and did not report my scores? as I could take it saturday, remember what I saw, how the test was run, and possibly be less nervous the second time around.

(2) What kind of test prep is available for improving 49Q and 47V? I have gotten these scores consistently and need the best ROI I can get. I know the questions I got wrong are mostly geometry for the Q and sentence correction for the V.

(3) What do admins see when there is a 760-780? Is it any different than a 790-800?
Would there be an incentive, like a clear noticeable difference between getting a 760ish and an 800, or are they both pretty much the same, from a scholarship, administration, or whatever position?


Thank you very much for your help.