Hello I am flying this route
JFK - PTY: Fare Class: Economy (B)
PTY - MVD: Fare Class: Economy (B)
MVD - PTY: Fare Class: Economy (K)
PTY - IAH: Fare Class: Economy (K)

I am Co Gold and my wife doesn't have a status.

Does Copa offer complimentary upgrades on these routes.
Should I upgrade my wife using miles
Should I split the reservation in two to ensure automatic upgrade ?

Thank you very much