I live in beaverton...
I wouldn't mind paying like $5, that's nothing. less then the gas will be most likely.
dec/jan is Mewcon, April is Sakuracon, so those seem like bad ideas as those are 2 cons that are close so kcon people might go to those.
oh.. and Nov has akicon. fanime in may. anime-expo in july.
so maybe... March or June?