I havent read a sample of your work but from my own experiences I tend not to decide how I want a scene to end. I know the start and finish of the book, everything else in between I let the characters decide.
Usually when I write, there is no conscious effort on my part to direct the story, perhaps the reason I am yet to discard a chapter or erase parts of it. The story lines have often surprised me when I read them afterwards. The twisted sub-conscious has more influence on the writing than moi. That said, let the writing develop, allow the stronger characters to dominate if that is how the story flows naturally, if need be, tell the story of the minor characters using a recall device or whatever they call it in another chapter. Gives you a chance to flesh them out then.