An October UY would be ok for June travel, but definitely not for August travel. My rule of thumb - determine the months you are LEAST likely to travel to WDW, and try to make those come just before the start of your UY. The guides always have a UY they're supposed to be selling, but I'd be surprised if that were October in the months leading up to October because that would sort of be the worse deal for Disney because they'd have to give you points all the way back to October 2024. Setting aside which UY is best for you, your guide might have have been trying to steer you towards the UY because that would have been a pretty good economic deal for you. But, you definitely want to pick a UY that is best for you over the long-term. (And, you can get that when buying direct if you know what you want going in and tell them that - they won't lose a deal over it.)