[originalscottyg]

I think the biggest take-away here is, as Jeffro mentioned, that there is no benefit to waiting out the grace period trying to "gain a little extra out of your support", as the grace period in no way extends the support period. Renewing on the 29th day of the grace period is the same as renewing on the 1st day of the grace period, or renewing 3 months before your support plan ends: the extra year is always added to your original expiration date.