Ok, I've been doing fantasy for years...and know offenses pretty well.

However, this year I'm in a league with IDP. I have no idea how to draft defensive players or when to draft them.

What round should you go for a LB, DB or DE?

The league I'm in is QB, 2-WR, 2-RB, W/R, TE, K, DEF, 2-DB, 2-DE and LB.

I'm at a loss as to when I should be drafting defensive players and don't want that to be what kills me. Any help would be appreciated.