Got My First Cage, And a Few Questions

Hello all, so I got my first chastity cage gifted to me by a close friend and I'm loving it so far! I've only been wearing it for a few hours at a time but it's snug and well fitting. I just have a few questions about it:

Firstly, I'm having difficulty keeping my foreskin over my tip when putting the cage on which leads to a few sensitive and irritable moment, any way to get around this?

Secondly, I get anxious to pee in it because I can't wipe as efficiently as I can without it on, is this something I should dwell on to fix or just get over it?

The design of my cage is in the link: https://images-na.ssl-images-amazon.com/images/I/41ZmqkyJKCL.jpg