Option 1: Leave real early, ride to RP then back to Plattsburg (4+ hours round trip)
If you make it to Rouses Point, there is a really good place for food just before the bridge that goes over Lake Champlain.
There is a motel and a Warm showers host ( if you are a member) in RP
Option 2: TRY to add a day of your trip and overnight in RP (warmshowers Host & motel)
Option 3; Bypass RP and plan another vacation and add RP in, and head over to Burlington