I've been asked this frequently and cannot seem to reply to comments (don't know why, I hit submit, page refreshes and there's nothing) so I'll answer it here.
The main thing left to do is inquire about the cost of cutting sheet lexan to the exact size needed for the window I plan to build into the enclosure lid. If Home Depot does this, awesome, it'll be done soon enough. If not, I know of several custom plastics websites that'll do it.
I have a lot on my plate right now but should get around to it before Christmas.