I think that either June or October would work out okay. June UY would probably be a bit better but try to think about when you would least likely to travel as well.
For example, with an Oct UY, trips in July, August and September are most vulnerable. For June UY, it is March, April, May.
June UY also is good for summer travel and if you have kids, that may be something you will need to do in terms of when you travel.
I think finidng a UY that falls just before typical travel gives the most flexibility but really, its about the banking window and when you would need to use up borrowed or holding points if you did have to cancel.
Good luck!