Exporting the MFD's to a second monitor is not really very hard. You turn it on in the ini file, and in Windows you have to place the second screen at the upper-right corner of monitor #1.
I have a mini widescreen monitor that fits the Cougar F-16 MFD button frames on it on a piece of plexiglass I can take on and off. Positioned right below my main monitor, it works great as a set of MFD's. Was about $60 for the Cougars, $50 for the monitor.

I made this in a very similar way in my pit and also used an old flat screen behind my panel, leaving a hole behind the MFD displays.

Sadly I never had the time to test the screen exporting with EECH, cause I also wanted to make the pit compatible with BMS, DCS and the FSX. For those sim many solutions exist and I wanted to get this running first, cause I thought this would be much more simple than EECH. After finishing the work at those simulations, I wanted to do the harder work and get EECH also running. Sadly I never got that far.

Main Cockpit System: AMD Ryzen 7 2700X / ASRock Taichi X470 / 32GB Ram GSkill F4-2800C15Q-32GVR / Asus ROG Strix GeForce RTX 2080 OC

WSO Cockpit System: AMD Ryzen 5 2600X / Asus Prime B450 Plus / 16GB Ram GSkill F4-2666C15Q-16GRR / KFA2 GeForce RTX 2060

Retro System: AMD Athlon X2 3000Mhz / ASRock AM2NF3-VSTA / 2GB Ram / Gigabyte GV-N68T256DH GeForce AGP 6800 GT 256MB DDR3 / Diamond Monster 3D II 12MB SLI