my friend just went to the beer summit in boston and had a similar experiece. he just grabbed stickers and other crap from the tables with the beers he thought he liked.
the smack packs are def designed for a 5 gallon batch, correct? you read the pack and it says when to smack it and when to pitch it. all for a 5 gallon batch, unless i'm mistaken.
but for real. if you dont have bubbling in ur airlock, especially at a lower temp. the CO2 might not be released in a noticably bubbling fashion, bc at lower temps gases condense like any air. think of a cold air intake in a car. creates more HP b/c there is more O2 crammed in a smaller space...