Nice cage - be careful with the hay roller though if it is one that has a large gap top put the hay in, some pigs have been known to clamber in and get stuck.
Thanks everyone. The hay roller usually has hay in it always. It has a door that snaps shut very tightly. You can see it filled in another pic. So far so good with the lights BUT I am considering using thumtacks and puttung them on the wall and off the cage.