about gmat age

Just FYI that some schools have their own requirements about how recently you've taken the test. Some schools require that the scores still be valid at the time you would start school, not at the time you apply (which is a year earlier) - so you'd have to take the test within 4 years of applying, not 5. Also, a few schools will only take scores from the past 3 years. The vast majority, though, just stick with the standard 5 years.

If you have an idea of where you want to apply, do some research on their web sites to see if they have any special requirements. (Also be aware that they can change policies in the future - it's not common, but it can happen.)