My personal opinion: unless you score a 750+ now, getting a 720/730 will not make that much of a difference.
If you score 650/660 or similar than the adcom might think that you got lucky on your 710 and that your true score is lower.
I would suggest that you focus on other parts of your application, unless you know you can REALLY improve your score.
"The Burnout" - My Debrief
Kudos if I helped you