Trying to kill three birds with one stone, maybe a little bit over optimistic.

We are drawing up a grant bid and I'm looking to upgrade from my single FS7 --> Intensity Pro 4K.

1. I'm trying to get some help and understanding in setting up a 3 x camera studio using Ursa Mini Pro's, is anyone using these camera’s?
2. The reason I am looking at the Ursa's is because they need to be used if film production as well as streaming.
Normally the cameras will be connected to a X299 Pro x16 PCI, either DeckLink 4K Extreme 12G or DeckLink 8K Pro
3. However, I would like to use something like the Sonnet Echo Express SEIII > thunderbolt 3 > the Dell Alienware M15 for a mobile solution.

Any comments would be very much appreciated, I’m not getting too much joy on the Facebook groups. Ah – Maybe I should have come here first.

Maybe that is all I needed from you DWAM, confirmation of what I am planning and that it should work ok.
I realise it's a large financial investment and perhaps a lack of confidence is where my post originated from.