Rate my draft

Auction Draft, $75 cap limit for this IDP draft, mandatory 7 players drafted.
Starters are: 2DL, 1LB, 2DB, 1Flex(DB/LB)

Campbell, Calais ARI DE $4.00
Vanden Bosch, Kyle DET DE $15.00
Fletcher, London WAS LB $5.00
Tulloch, Stephen DET LB $18.00
Polamalu, Troy PIT S $6.00
Rhodes, Kerry ARI S $14.00
Whitner, Donte SFO S $13.00

Scoring is Thus:
Defensive:
8 pts = Each TD
6 pts = Blocked FG
5 pts = Blocked Punt
4 pts = Safety, Interception
3 pts = Blocked Extra Point
2.5 pts = Forced Fumble
2 pts = Sack, Tackle For Loss
1.5 pts = Fumble Recovery
1 pt = Tackle, Pass Defensed
0.5 pt = Assist, QB Hit
0.2 pt = Fumble Recovery Yards
0.1 pt = Interception Recovery Yards

Grade me on a 1-10 scale or an A-F scale, or an F-Minor diminishing Blues scale!
Thanks in advance!

Depends on how the other rosters stacked up in your league. But based just on your roster alone, I would rate it a 6.9. I like the Whitner, LFB, KVB, and Campbell selections. I think you overpaid for Tulloch, however. It's hard to tell his value right now as they still haven't figured out their linebacker setup in subpackages yet. But even if he plays every-down, he's not gonna put up anywhere close to the numbers he did last year.