Just keep mining while its still profitable, even if its only a few dollars a week. Hold those coins and wait for higher prices, that way you haven't risked anything. You might find those few dollars a week are worth a lot more. When ASICs take over pick your favourite alt-coin and mine that...
+1 to this, and it is already what i'm doing
only if you aren't using 5xxx cards, otherwise you're losing way too much equity