Very high scoring IDP league LB2 and sleeper sack question

Tackle Solo  1.5
Tackle Assist .50  
Sack  5 (are compounded with TFL, so sacks are actually 9 points!)
Tackles for Loss  4
Interception  6
Fumble Force  5
Fumble Recovery  3
Defensive Touchdown 6  
Pass Defended  1.5

I dropped Johnson after his injury and have Dansby as my LB1.  I picked up Mayo as my LB2 but Worrilow and Greenway are still out there.  I'm limited as to how many move I can make a season, but there are no waiver priority rules unless a player is dropped.

Would you stay put with Mayo or do you expect (potentially) a much higher scoring total from the two LB's I listed with my scoring system?

If I picked one of the two up now for bye-week filler or depth which one would you choose?

Any sleeper LB's that could rack up a lot of sacks and/or benefit from such a system that I should keep my eye on this year?

I still like Mayo slightly over Worrilow and a little less slightly over Greenway. I'd pick Worrilow for the bye week filler. From a sack perspective, I think Barkevious Mingo is still a great breakout candidate despite his poor Week 1 performance.

Thanks, Mingo is still out there as well.