Completed my GMAT - 680

I have just completed my GMAT. Got a dismal 680 (Q-48 and V-35). I was expecting it to be in the range of 700 to 730. I was consistently getting in the 7XX range in all my practice exams.

Questions that I have:

• Should I retake my GMAT to achieve a 7XX score or use the time to create a powerful resume & essay.
• What are the colleges that I should target. My target location is US or Canada.
• Will my age of 34 (My one line profile will be 34 Yrs, Indian Male, Consulting, 9 years in ERP) be an asset or disadvantage for US schools. I find most US schools to have young student profile aged between 25 to 30 years.
• I am targeting schools with specialization in General Management or Leadership