That's how it pretty much starts for most folk, isn't it? You find somebody you think wonderful and then find somebody else you also think wonderful--and wonder why you can't get involved with both of them.
And, yeah, the keys to working poly relationships involve many of the things essential to working all relationships.
How do you think coming out as poly would go over in the business world? You mention being an executive, so I wonder how socially acceptable poly would be in business circles. Heck, the reaction of employers is something to be wary of lower on the totem pole, so I have to wonder if it wouldn't be as troublesome an issue higher up in the ranks.