Good job. Sort of sad to put the TT to bed for a couple months.
FWIW -- we don't need to winterize in this part of California, maybe blow out the lines. I live the valley too, near Fresno, sure we get some cold nights but it isn't cold long enough to freeze lines inside your TT. I simply drain tanks & water heater then blow out the lines with my compressor. I do add antifreeze to the sink traps and toilet.
2007 Chevy Duramax LMM/Allison
2012 Jay Flight 29QBH
2012 Jay Flight 26BH (Sold)