The age limitations don't have anything to do with when you start primary. They are "commissioned by the age of" limits. That would be the long pole in the tent, but at least that isn't as long a pole as trying to game when you will finally be done with potentially sitting around Pcola for a few months, IFS, API, and finally classing up for primary. It's been a decade since I was up to speed with commissioning/entry requirements, but I seem to remember 27.5 for the USMC waiverable to 29 with prior enlisted service (which doesn't applicable to your scenario). At 26, you should have time as long as you are nearing completion of college or are already done, and you are in the process of getting into OCS.
