Newbie looking for guidance

Howdy. I'm new to all the business school application stuff, and wanted to reach out to see what valuable insights y'all had to offer. Below I've posted a brief summary of my GMAT study efforts and results thus far to provide some perspective. My target exam date is August 1 and my goal, I suppose, would be to have my GMAT score be a point-positive on my application. I'm planning to apply to the following schools:

1. Haas Part-Time
2. Booth Part-Time
3. Stanford
4. HBS
5. Wharton

I don't have any interest in applying to schools other than top-tier due to the cost/benefit as I'm currently an actuary for a consulting firm (4 years experience as of July this year) and have decent upward mobility within that existing framework. That said, I'd ideally like to transition from the very technical and less-management-focused actuarial world into something more broadly challenging and, at least to me, significant. I consider myself to be a subpar candidate in most respects in that I'm a typical white dude working in consulting for a smaller firm, I went to a non-prestigious University of California school, and although my cumulative GPA at the UC (not including lower division from various community colleges) was 3.94, it took me a while to finally get to that point due to familial issues (divorce, death) and several years of listlessness (I was even an EMT not going to school for a while). Hence applying to part-time programs.

I guess what I'm looking for is an idea of how realistic my goals are, and what areas I should focus on to bump up that GMAT score, if possible (and also whether there is any significant impact by do so, assuming the below is an accurate reflection of my actual exam performance). How, for instance, on those very difficult math problems do I decide when to give up. How can I better organize my thoughts in under 2 minutes (it always seems like the problems seem simpler when I review and have more time to think).

Thanks in advance and sorry for the ramble.


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• Began reviewing practice questions from the GMAC Official 2016 Guide on 6/1, focusing predominantly on verbal (my then-perceived area of deficiency).
  
  
• GMATPrep Practice Exam 1 - 6/12
  710
  Q-44 (didn't finish this section due to time management; much harder than I thought it would be)
  V-44
  IR-8
  AWA (didn't finish in time)
  
  
• Began studying the quantitative section more heavily after first practice exam, focus on timing, etc.
  
  
• GMATPrep Practice Exam 2 - 6/15
  760
  Q-48
  V-46
  IR-8
  AWA (barely finished)
  
  
• VeritasPrep Practice Exam 1 - 6/19
  750
  Q-51 (again, I struggled with timing despite finishing. missed last several questions due to haste).
  V-42 (found this more confusing than the GMATPrep, for whatever reason. 6/9 missed were sentence correction.)
  IR-7
  AWA (again, close finish but better than first 2)