This is gonna be a little complicated, but I'm going to have to add a week to week 14 then.
I'll randomize teams that have not played each other twice and force a week in there.
So, for example,
I play: Shiva, 3 downs, pwn, moocher, xx once.
So, I'll add Shiva. I'll keep going down the line for teams until we are all set.
Then I'll change playoffs to 15 and 16 top 4 teams. 1 vs 4 2 vs 3.