Hi
maggieapplesI don't have the experience you are seeking, but I would like to share with you my opinion.
GMAT score represents what you are capable of, not what you are right now or the this month.
After getting 730 in GMAT, you will not maintain it for ever ... you will not maintain it even 3 months after the test.
Business schools know that. Also, the 5 years validity of GMAT is agreed upon by the GMAC as well as the business schools who acknowledge it and set it as a requirement for admission.
I don't think that a business school would see your early GMAT as a weakness. On the contrary, it may be an advantage for you because this move would mean that you have long term plans and that applying to MBA was not just an instantaneous decision, but a well planned objective.
You have a good opportunity, not available for everyone. good luck with it, hoping for you a stellar score.