Sack Combo

IDP league help, what positions to start?

The scoring for my league is:
Tackle Solo – 1
Tackle Assist – 0.5
Sack – 3
Interception – 4
Fumble Force – 3
Fumble Recovery – 3
Defensive Touchdown – 6
Safety – 2
Pass Defended – 1
Block Kick – 3

I have to start 5 defensive players, however there is no restictions on positions. [...]