I'd go with k2,p2 as well. OR you can go with this:
Rib of Doom Instructions
- [K3, P3] work to end of round
- [K1,P1] work to end of round
Repeat as needed.
This was used for the International Sock of Doom pattern for sock wars in which all participants had to knit a sock for someone they didn't know (who signed up for the challenge) we all have different sized ankles, and this worked for everyone that I've heard. I was in it and my socks turned out great.