Hi hamburglar3,
While having the character traits you described can be quite helpful to scoring at a high level on the GMAT, I've seen many genius-level thinkers get 'hung up' on the GMAT because they were not flexible enough in their thinking to learn *new* ways of dealing with the Test. In effect, their egos got in the way of their improvement.
If you're curious about how you might perform on a full GMAT, then you can download two CAT tests for free from
www.mba.com. A FULL-LENGTH CAT takes about 4 hours to complete, so make sure that you've set aside enough time to do so in one sitting.
To hit the score range that you're aiming at, you have to know more than the required content and tactics - you have to be willing to do the necessary WORK (in practice and on Test Day itself). It also helps to be a 'pattern-matcher', calm, organized, relatively free of anxiety or similar concerns, and have a level of precision to your work that essentially eliminates all silly mistakes from your process. Unfortunately, there are also the x-factors on Test Day - you can't have a 'bad day', be too tired, get too hot, get distracted, have a headache, etc. and hit a 780+. You can do your best to plan for those final factors, but sometimes they're completely out of your control
GMAT assassins aren't born, they're made,
Rich