Haven't been so sore in a looong time

Yesterday was another WOD from Hell at Crossfit Langley.

For time :

12 DB Bench Press using around 75%BW (I used 60%BW or two 50#)
12 Back Squat using BW (I used 81%BW- 135# since I suck at them)
15 Pull ups
300m Row

9 DB Bench Press
9 BS
12 Pull ups
300m Row

6 DB BP
6 BS
9 Pull ups
300m Row

3 DB BP
3 BS
6 Pull ups
300m Row

Roll over and die... I took me at least 10 min to recover from that one.
Bench Press felt light, and I was cranking the pull ups non-stop !

I HAVE TO FIND A WAY TO IMPROVE MY LEG STRENGHT : Those are the exercices I suck the most at ! Going back to Beyond Bodybuilding from Pavel Tsatsouline for the squats !