.... you are contemplating
(I haven't made any plans yet
) a 1,646 mile (2633.6 km) multi-part round trip road trip to follw your sensei to a seminar he's going to teach in Cincinatti.
.... you even consider such a trip because you really liked the dojo there (this one: http://www.aikidocincy.com
-- it is an impressive place IMHO) and have been waiting for a chance to go back.
... you feel conflicted because there might be a Francis Fong seminar in Niagara Falls on the same weekend as the Cincy Aikido seminar. (Although the mileage for that one would be shorter.)