That looks like all the parts you need. Check the service manual and make sure you installed them in the right sequence.
I really hope it's not coming from behind the pump plate. That's glued on with... Sufficient RTV. If it makes you feel any better, I'm having an alignment issue that might need me to remove my pump plate and I'm about as excited as you.
Id take all the hardware and look at the pump plate plastic on the hole. I thought on mine the plastic goes through the hull and makes a full seal, so a leak behind the plate would be from the side, not the middle.
If that's true, is the drip coming from the middle or around the side? That might diagnose whether it's the kit or the plate.