Hi there,
Your GMAT is respectable, and your work experience solid and likely would enable you to contribute strong points in classroom discussions which is great, however at the very top programs you mentioned, it IS extremely competitive, and a higher score would only help, so if you feel you could improve there is no reason NOT to give it another shot ! (Side note you wrote 720 in your comments but 710 in the title??). Go for it if you have time!!
Your GMAT is respectable, and your work experience solid and likely would enable you to contribute strong points in classroom discussions which is great, however at the very top programs you mentioned, it IS extremely competitive, and a higher score would only help, so if you feel you could improve there is no reason NOT to give it another shot ! (Side note you wrote 720 in your comments but 710 in the title??). Go for it if you have time!!