Oops =) If I understand correctly you're wondering how to get bigger socks with such fine yarn...? That's what I'm going with for now. XD
About using patterns with bigger needle size, the biggest needle size I've seen recommended for sock yarn is 3. You want a tight stitch, so you don't wanna go up too much in needle size unless you knit really tight. Holding 2 strands together would make awfully thick socks. You will get bigger socks I suppose, but they won't feel as light.
To make sock patterns bigger with the small yarn you'll probably just have to use a pattern with a bigger CO.
If I'm still wrong forgive me. I got home from work at 1:30 this morning so my mind isn't all here. haha