I have light!!
Not sure I will ever need more than the 10 light fixtures I put in there, with all 10 turned on (I wired them in 2 banks of 5) there is no dark spots anywhere. It's a really nice even light from front to back.
Decided to just take my time and carefully cut off the outer jacket on the UF-B cable, one end was easier than expected, the other end a pain in the ass. But, got that all done and hooked up. Flipped the breaker at the house, walked down the hill, flipped the breakers in the garage and everything works. It's actually pretty awesome having light and power in there, just makes it feel that much closer to finished.
I then took down a wifi extender I had bought and plugged that in, I was a little nervous given that at this point burying a fiber or ethernet line would have sucked. Anyway, plugged it in to an outlet I installed in the ceiling (garage door opener) waited for it to connect and then tried a speed test, still get a little over 100Mbps download speed in the garage, which is plenty.
Gotta chase up a lumber order for the doors and windows, get some siding and paint and call it done (for now). Trying to decide where to mount a TV down there as well, but that sort of thing is no real rush at all.