NVR Application Installation Help

Looking to add a NVR to take some strain off myh Dream Machine Pro and looking to add a few more cameras (I have the max of 8 already and looking to add 2 more)

Other than the additional storage is there much of a reason to go with the NVR Pro over the standard NVR? I honestly will have 12 cameras max and would like to keep 2 weeks or so of 24/7 recording.

I love the 2U Design over the 1U and the fact that the network cable is in the rear of the standard NVR Might drive me insane lol.

Also Would I have NVR going to switch to direct to Dream Machine Pro?

Any Benefit of doing a SFP Port rather than Cat?

What SFP Cable should be used in this application?

Thanks!