Connect multiple devices to one Thunderbolt port with docking station

Hello everybody,

for a video editing setup I would like to use all devices connected until now directly to my iMac just with a Thunderbolt docking station on only one Thunderbolt port. What I do not understand is, whether bitrate will stay the same for each device or will be splitted? Has this to do with daisy chaining Thunderbolt devices?

So this will be the setup:

• 1 Thunderbolt cable from iMac to Thunderbolt docking station
• devices connected to docking station:
  • one Blackmagic Intensity Shuttle Thunderbolt
  • one external USB 2.0 hard drive
  • one external USB 3.0 hard drive
  • external HDMI monitor
  • Ethernet connection

So the general question is, will all of these devices get only part of the bitrate that Thunderbolt provides or can each device, theoretically, get full Thunderbolt bitrate?

And are there different types of Thunderbolt cables (Thunderbolt 1 or 2) that I have to pay attention to?

Regards DonTimo