What would you do?

See this stripey sock? I've been working on it since February. Not really, of course; for several months during the gardening season, I ignored it. In fact, the only time I touched it between February and now was when I took it to Stitch 'n' Pitch at Turner Field.

Nevertheless, I am finally approaching the end of Sock #1. Unfortunately, the set of size 3 Addi Turbos that's in the sock is the exact same one I need to swatch for my Neiman sweater. I have the yarn for the sweater in a bag next to the sofa, and I can't wait to start it. Meanwhile, I'm kind of bored of the socks--although I will admit I would love to be wearing them right now!

Do I:

(a) Grind my way through the stripey socks before starting my sweater?

(b) Put the sock on a stitch holder and start swatching the sweater right away?

(c) Buy another circular needle, because it's an awfully useful size and you can never have too many Addi Turbos?

(d) Do something else I haven't figured out yet?