Need some help altering Bill Starr 5x5

[xoom]

Hi, im doing the Bill Starr 5x5 at the moment. It looks something like this:

Monday:
Squat
Bench
Barbell Row
Assistance: weighted sit-ups and hypers

Wednesday:
Squat (light)
Military Press
Deadlift
Assistance: sit-ups

Friday:
Squat
Bench
Barbell Row
assistance: 3 sets of weighted dips, 3 sets of Barbell curls and 3 sets of triceps-extensions

As you can see day three (friday) is a lot longer in terms of number of sets. How should I go about evening it out? Can i just move biceps to monday and swap sit-ups (wednesday) with triceps friday? What is the best way to do this?

Thanks.

[straightaway]

I've been on this for 4 weeks and for assistance I do:
Monday:
same

Wed:
5x5 or 3x8 pull/chin ups
different kind of sit ups

Fri:
3x8 bicep curls
3x8 triceps extensions

It seems to work pretty well, but I do incline bench instead of military press on Wednesday.