How do I do that easily for him.
Steve,
Aside from throwing the "Warren Buffet budget" at it... I really don't know. Again, from what I know, there are no "simple" solutions. Aside from purchasing an already set up cockpit system.... which ARE available.... and which are BIG bucks. Even the kinda "generic" ones.
I think that you need to research what each component you are considering can actually DO... and then decide what other "plug and play" components will add necessary functions. It'll take a lot of research to figure out what is the best combination of things.
One place to look for a lot of "plug and play" functionality (which STILL takes configuration and setup to assign the functions you want it to control) are the Goflight units. They are highly configurable. Take a look at their "packages" already set up in metal console cabinets. I use a number of their panels including the MCP and four of their VRP 166-s for my comm stack; they are GREAT.
With enough of their units, you could likely eliminate the keyboard and mouse for a lot of aircraft. Not maybe the more complex aircraft....but certainly the default stuff. It will be a very generic look......but that is not necessarily bad. Still a HUGE jump from a monitor, keyboard, mouse, and joystick ;) .
Undocking screens might be the way to go for you. But that is a difficult row to hoe too....in getting it all to go where you want and getting it to STAY there.
I am sure some others will chime in here soon with more thoughts.
best,
..................john