Yeah, you are right in that Stafford will be at safety, I think he will contribute but its hard to get backup safety's on the field so I put him at olb as I use the 4-3 as the peso. I then formation sub fisher in to the 4-3 under/over for the traditional 4-3.
The only reason I have sirles as a backup is because I went with a respected posters opinion from a husker message board as to who will start on the o line. Who knows how that will pan out.
thanks for the feedback!