Here are a few pics of my current setup. I don't find the center stick comfortable and my goal was to have a setup that would allow me to use the keyboard, stick, and throttle without having to remove the stick or move the keyboard tray to the side. Plus the keyboard tray wasn't flat for some reason when I attached it to the right side of the chair.
The answer was to buy 2 flight stick mount kits and use the shorter of the mounts for the throttle and the stick. It's low enough that I can use the throttle comfortably while the keyboard tray rests above it. I've mounted the throttle and stick at a slight angle on the bases so that I can keep the arms angled outward a bit so that they stick doesn't contact the keyboard tray.
This setup cost a bit extra but to me it's worth it. Oh, and I also mounted the 3rd base to the right behind the stick- ipad, drink, whatever else goes there.
in the last pic you can see how uneven the height of the two side monitors are- quite disappointing that the monitor arms seem to be of different heights :-(