Thanks guys...

Oregon, I am fortunate enough to live around the corner from an REI. I asked them if it was okay if I brought my 70L in and pack the 60L, and decide on a return and they were cool with it... so that is exactly what I'll do!

A quick follow-up if any of you read this... how do you pack your food? Just put it in a dry/stuff sack?

thx
~grc