This.
Before putting in a parlay like this with a stand-alone last leg, ask yourself honestly if you are going to hedge that last game. If the answer is yes just leave it off and hope you hit the others and can decide what to do with it then.
The only exception is when the last leg is a ML fave so you can take the dog + points and go for a middle, or if the last leg is a spread and the line has moved across a key number. If his last leg was OSU +7' it would obv make sense to now take at least some Oregon -6'
All that said if you're gonna lose sleep over it when Oregon wins then hedge a nice chunk of profit out, but slant it towards OSU. Then don't do this the same way again next time.
Either way great hit so far.