The bobbin is just the excess from the long tail cast on (I either make my tail WAY too long, or just a bit too short), I just haven't cut it yet. I'm hoping I have enough yarn. I have two 50g balls of KnitPicks Essential in Grasshopper Kettle Hand-Dyed, and it seems like I'm cranking through the first ball really fast.
Pattern: Lace Rib Socks from The Little Box of Socks by Charlene Schurch and Beth Parrott. More pictures when more progress.