There is a 99% chance your Honda controls will have the bog standard throw of almost every mechanical control built after about 1975 on the planet. Just change the fittings on the end of the cables.
I did that going from the Yam to the Merc, and have also in the past borrowed a Tohatsu control to use while I was refurbishing the 703.
You will likely have to do some mucking about with the electrics tho'. Part of the reason I moved mine to the console!
You will run into problems if the Opti is "fly by wire"...