I'll ask this here since this seems to be the right forum for OnePass questions and I got it wrong the first time.

I'm trying to book reward travel on through Continental for a round trip ticket in mid-August from Albany, NY to Cancun. There's a Saver Award available through Newark (EWR) but it's got an 11 hour layover. I know there is a 9:40am flight from EWR to CUN that I would be able to catch (besides other code share partner flights throughout the day), but they're not showing Saver Award seats right now. The question is can I book the Saver Award ticket and then later change my flight to catch one of the earlier flights and not have to cough up any more miles? Even if I pay the $75 change fee? Or am I better just trying for standby?