Hmmm... Hard to decide what to drop.
Maybe drop some detachments. I'm not sure about the two 5-man detachments for the handgunners for example. One of those will always come in handy, two might be a bit much.
I also think you would do OK with two detachments of 8 for the main units. And drop one swordsmen and one spearmen; the EC and the BSB will take these units to 25 strong.
Oh, almost forgot: I'd drop the champions from the infantry units. Never seems worth it to me, and I've done fine without them. I can see the use of a champion in the warriors of ulric, since he has a higher strength, but an extra S 3 attack is not worth 10 points for me.
If I'm correct, this would give you 103 points. Drop some warriors, and you can take another unit of knights.
Another option would be to take some DOW light cavalry instead, since you're using the campaign army list anyway. A unit of those will only cost some 70 points, but lacks the survivabilty of knights.
As for the warrior priest: maybe put him on a barded steed, and have him join the WW. If you want him to go with the warriors, the armour of meteoric iron might be a solution.
Good luck with your game!