With dual station controls, each helm control must be able to tag-a-long the other control when a gear selection change is made from either helm.
If you are wide open to suggestions, I would recommend the old tried and proven Morse Twin S controls.
Excellent quality, and they seldom give us any trouble, etc.
Don't let the old looking style fool you! This is good stuff!
Oh... and watch out for the Chinese knock-offs by "Seachoice"!
A good clean used Morse Twin S would be a much better choice.
Don't confuse the Mores Twin S with the Twin SR.... IMO, the SR can be problematic.
The Twin S mounts directly via four screw mount holes. (other then the ID tag, the Twin S has no removable cover)
The Twin SR mounts from underneath a removalable SS cover.
The Twin S is fully capable of dual station operation.
They require the Morse 33C style cables, which you may already have.
You will want to piggy-back from one helm to the other, and then chose which helm will make the home run to the engine.
Example: If you plan to use the flybridge morse so than the lower station, then the upper helm will make the home run.
Visa-versa if you plan to use the lower station more often.