Howdy Boo1 ~
Patterns using cables will probably require a little more yarn than "plainer" socks. Ribbed socks or any socks using a basic knit purl patterning should have pretty straight forward yarn requirements. Although, to be on the safe side; since this is the first time you are making socks for yourself I would purchase an extra skein of yarn to avoid the frustration of running out of yarn. If you do not require the extra skein all the better you can use it in a future project for contrasting toes, heels, and or cuffs.
If you can borrow the Charlene Schurch book "Sensational Knitted Socks" from your library it gives a set of charts showing different yarn requirements for different weights of yarn to make different size socks.