Monitor setup/Cable length

Hi !

I have a workshop and I'm looking for a way to connect 2 (exactly the same) tv's with both HDMI and VGA inputs to my computer.
The main reason would be to be able to watch my security cameras while working.

Finding a GPU which can do this won't be too hard, but here's the problem:
my computer is in a seperate room at about 20 (or maybe even 30) meters away from the 2 tv's.
This is because of practical reasons so my pc cannot be moved.

Also, because of the distance between the tv's and the pc, I need a third monitor because I cannot see the tv's from where the pc is. So what I'd want is split-screen tv's and a single seperate monitor, preferably all on the same GPU

What would be the best (and cheapest) way to do this?

Thanks in advance!

Brad