i believe you over train them like this!!.. it's not normal to be sore for 5 days!!.. train them twice a week,.. just 2-3 exercises, 3 sets each.. no need to count the reps, just reach the point of failure..
Here's what i did yesterday, the first two are standard i mix up the middle 2:
5 sets to failure on the decline machine
3-4 sets where i lie on a bench and my brother pushes my legs down and I raise them back up
2-3 sets hanging leg raises - failure
2-3 sets ab wheel - close to or failure
3 sets twisty oblique machine - close to failure
It gets me good and sore.