In your situation I'd also go for two and, if possible, 16:10. Just to have more space.

 

65" is to much unless you have depth of field (large old style control room). 32" to 43" is the sweet spot for optimal viewing taking into account:

• image quality
• scaling ability
• brightness levels
• color accuracy

Just to name a few. Try this trick.

• measure from your centered seated position from your chest to where a display would sit
• divide that measurement by 2
  
• place a piece of tape to mark the left & right edges from the divided center measurement

How easily do you see the markers looking straight forward.

I am going to Costco today to grab a HiSense R6 43". Gets a 7.5 from creators for use as a computer monitor. Currently $249 CAD.
Want to replace my 32" Samsung with a larger screen rather than go the two 27" route.

Cheers!