I am getting a 2016 MBR Pro. I am replacing a 2013 15" early retina. I have lots of accessories - Drobo 5D, a few Lacie Drives, the sea gate bolt sleds, east a, Ethernet dongles, and a caldigit thunderbolt station. After researching all the USB-c and Tbolt 3 issues, I am gonna hold off on a tbolt 3 dock. Right now, I just need Ethernet and mini-DisplayPort daisy chain to a Cinema Display. I figure I get the USB-C tbolt to tbolt 2 adapter and use my existing Caldigit Thunderbolt dock. It wont have pass through charging so I will be using 2 ports. The other 2 ports can be open to hubs or DisplayPort adapter once I go 4K. Any issues? USBC/toTbolt2 adapter to-> Caldigit -> Apple 21" iMac as Thunderbolt Display daisy chain -> to mini-DP Cinema Display. Doable? I don't get my MacBook until next week.