Take a LB. Roy Williams would be the only DB I'd think about taking.
Brooking is an excellent pick. Urlacher is the best pick, but I don't like taking a D player that early (he's a legit 5th rounder - but I don't take him there). With Colvin gone, he'll be blitzing more. He should have his best year. Ray Lewis and Derrick Brooks are decent options, but I'd wait until the 7th or 8th round before thinking about them. After thejm, Brooking is as good as anyone, maybe better. I also like Edwards, Bulluck is a good one. Zach Thomas is a good pick if it is total tackles instead of solo tackles.
LB's are consistent points based on the tackles. With the scoring only giving 2 for a sack or INT, I'd be keying LB's all the way. If there is room, take a LB and maybe Roy Williams and wait it out. I'm not as experienced evaluating the DB's, but I've seen a couple sites refer to him as the Urlacher of the DB group. Adding Newman should allow him to cheat closer to the line and become even more of a playmaker. I think he is worth having, but I'd sure want a LB too. There are PLENTY of LB out there. Starting only one ensures a very deep pool. After Urlacher, I think I'd wait very late to take my D player, as the difference between the rest is going to be fairly small. Lewis is possibly a ??? still, Brooks value is more 'TD induced' - not worth gambling a high pick on.
The meek ain't gonna inherit $#!%....'cuz I'll TAKE IT!