Hi,
I know you were not soliciting my feedback and asked for
mbaMission and I don't want to steal their thunder.... I will likely fail at stealing it, actually but just wanted to reply
1+1 is very competitive for HBS/GSB/Yale deferred programs. The admission rates are thin. Your profile sounds amazing, however. If you have time, I would work to improve your profile as much as you can and while you cannot fix your GPA, you should be able to pull up Quant. (as long as this is the weaker spot of your application) If you can raise it to Q49, you will get a 760+ score which most of the other applicants will have.
P.S. For whatever reason, i see many engineers and financial folks score poorly on quant and I don't know why that is really. I feel perhaps is becuse they did not think they needed to put the effort in or perhaps they did not do enough review of the basics. Whatever the issue is, if you have the time, spend 80-90% of it is on Quant and 10-20 on verbal to secure your amazing V44.
P.S. You can try
TTP or Math Revolution. Both are very economical in terms of cost.... but I can see how it may exhausting too if you have given it a few shots.... If that is the best you can do with the top effort then you should stand proud but if you don't feel you gave your best effort... it is not about numbers but the effort