Triple Screen Setup Advice Needed

[Kapucha]

I would like to ask some question related to Tripe Screen Setup.

I'm planning to go 3 x 1080P but I'm not sure if monitors should be Curved or Flat.
I'm worry that Curved monitor will introduce a little warping on the sides on each screen because Game Engine or even Graphics Driver will know nothing about Curvature of each screen? Am I right?

Also I think I will be sitting about 80 - 100 cm from the screen. Should I go 27'' or 32''?

What monitors do You recommend for triple setup in such conditions?