MBA at age of 28!!!! Need help

I am planning for an MBA (1 year program). I am 27 years of age with almost 5 years of work ex in IT

Need your advise on below:

What colleges should I try for? What should be the ideal GMAT score? 

My Profile:

Work ex - 5 years (Tier 1 MNC)(IT product base company)

UG - BTech from NIT in computer science. CGPA (8.2/10)

12th - 88%

10th 90%