If you have a Glam Cowgirl vision like Rachel, of Vintage and Lace, choosing a venue like Kahua Ranch is PERFECT. She transformed the barn into a gorgeous lounge space while still keeping to her Paniolo vision. If she chose a beachfront venue with old Plantation charm, would she have been able to execute this particular vision? ABSO-EFFIN-LUTELY she's a very talented designer. I think your budget could be better spent on really good food, amazing details and the best in entertainment, rather than trying to fit your vision to the venue.
Plus WHY??? Right?
We say choose an appropriately matched venue for your vision, and not the other way around.
Hawaii Island has so many gorgeous venues, each with it's own "personality"
The reason you can't decide on a single style for EVERYTHING is because you are utterly and completely YOU! Don't apologize, you have your OWN style. How wonderful is it to harness that!
Your event designer should revel in the fact that she gets to create something so distinctive. It's one thing to find a style and create an event, it's completely euphoric to create a style out of the things you LOVE.