quick guide:
speed to 68
agility to 68
vision to 60
Then for OLB
vision to 68
tackling to 48
strength to 48
tackling to 60
strength to 60
For MLB/ILB
tackling to 48
strength to 48
tackling to 60
strength to 60
vision to 68
I believe in fast LB's even if they are playing MLB and don't invest in any SA until you have got both spd/agi ti 68, vision to 60, and str/tackling to 48