I missed my OG last brew day by 1.010. Although I know it's not the end of the world, would it benefit me to add a bit of extract in the primary bucket to up the gravity?

Ok, if you want to stay with the moral majority. Look up used commerical kitchen stock pots. You can get the large pots on the cheap. I found quite a few on ebay (40, 60, and 80 quart pots) under $100.

Want a cheap 15.5 gal brew pot? Buy a keg. Drink said keg. Let them keep the deposit. Use a dremmel with a cut off wheel to cut the top off the keg. BAM! Cheap brew pot (also, most homebrew shops carry the hardwear to drill a hole and "bolt on" spigot, thermometer,etc.)