Congrats and very well done Dan, congrats! At some point am going to get a new Sony as well with the high end chip set, maybe not the Z model but one model done in a 75" screen to connect to the 105.
again looks very well from your post which I know do little justice to these new sets.
I have made sure all movies I buy as of late on Blu-ray are also 4k as well so i spend a few bucks more give the kids the regular disc and keep the 4k stuff.
Hope to do what you did soon. again congrats!