First of all, if there's one thing Bronco and K-Popp have proven, it's that they know the OLB position. Their track record speaks for itself. So all of the fuss and bother coming from people on CB carries about as much weight as a two-year-old's opinion that there is a monster in his closet.
Secondly, if KVN were coming back, it would take a prediction of 15-18 sacks to qualify as bold. We will be doing so much more pass rushing from the WLB position this season that I barely think 10 sacks from Kaufusi qualifies as bold. He's going to be taking on OT, TE, and RB one-on-one. 10 sacks is pretty realistic.
I think the boldest prediction is #2. 3,500 passing yards and 40 TDs will be very hard to reach.