Interior design help please!!!

Hey guys,
You are all a huge help to start things off!!
So i scored this little guy for a steal. I plan on just kitting it out to get all my peppers and tomatoes out earlier next spring. Sick of buying diseased crap from the local greenhouse. Just thoughts on the interior. I don't want to do mylar or substitutes as it's a small enough cab anyway. Leave as is or spray paint white interior?

I'd leave it as it is so it's easy to clean.
Wouldn't worry too much about reflected light in such a small box.
Nice rig.

Thats what i was leaning towards too...