For anyone wondering, yes this hardware can handle the requirements. We have used it for 2 football games and had no problems.

we've got one just for ease of separating things and when you have to tinker with a trim adjustment it's a much simpler set up even if you're operating both comps you basically just have a bigger UI.
You don't have to get another if you're using it like that in a reasonable way. I wouldn't use it to run a seperate show etc it just helps with workflow being able to spread it.

My experience with the GTX 1050 are no so good on my new laptops i use the GTX1060 but the Laptop versions.
with the 1050 i had to much GPU overload.

for the case if you won't have a smaller one (THETIS Midi-Tower). Its a little bit tricky to get everything in but its from the size better.

I was making production for TV, boxing tournament.
Had graphics on external render and one camera replay (1080i) setup (around 10-15 inputs). BMD decklink duo 2 and mini recorder.

i7 4770, 12GB RAM, 256 SSD samsung EVO 860 and graphic card radeon rx 580 4GB

the procesor was around 12%, sometimes in short time jumps to 17%, and goes back around 12%

So if someone is thinking to buy or make this kind of setup I was very satisfied with this. It was a first time I used replay like this