I would be glad to help you with this task.
I'm a synth passionated music producer with some experience with reaktor.
I personally think that the best option should be to make a Reaktor 6 Instrument and/or a Kontakt Library.
Kontakt and Reaktor are 2 instruments/framework from NativeInstruments, they are both compatible with mac and win.
Regarding the "update" I easily propose to make a downloadable pack from your website that can be extracted in the installing location to update the instrument (it's the easiest way).
I can, eventually, on request, call a friend/collaborator of mine (who is an excellent coder/programmer) to make something better, but it would be more time&costs expansive.