A: Get at least two packs of dry yeast. No, you don't need to pitch two - you need to put (at least) one in your fridge for the next time. Dry yeast, kept refrigerated, is darn-near immortal (ie, don't sweat the expiration on your backup package unless you are a major worry-wart, in which case $2.50 every 4 years or so is cheap insurance).
B: While long delays are not ideal, it should be fine if the sanitation was good.
Re-filling the pipeline - got a lot of brewing to do.