Thanks for the tip. These are what I was using
http://www.amazon.com/gp/product/B000EENMDE/ref=wms_ohs_product
DR Strings Tite Fit Electric Round Core 12-52
What size should I use for Drop C do you think?
That set isn't bad but I'd go with a heavier low C, like a .56 or slightly bigger. You're basically in standard D except for that low C string so the rest are probably fine in regards to size. Usually these sets are named "skinny top heavy bottom" and are geared toward drop tunings and such. So you're fine on the unwounds starting at .12 but yeah a bit bigger on the wound ones would probably help.
I hate when I type your in place of you're