"call me crazy, "
That's crazy. (well, you said...)
First, I argue that WYSIWYG is NOT the goal. It's not a realistic goal. You're dealing with two totally different ways of making color. (To put it as my student did once, what the hell, you're staring into a frikkin lightbulb, how is it ever gonna match a print?)
Your goal is to be close, and within that, more importantly, consistency. I'd concur with Czornyj. How can this be a consistent workflow? It can't. As far as checking gamut, etc, and I find "Proof Setup" and "Gamut Warning" to be the most useful, rather than attempting WYSIWYG.
Your use of "color space" is one of my big issues with the language and terminology used frequently. A working "color space" is a very specific term. It's different from a paper/printer profile, although they both have a "space".
I'd suggest, rather than, or maybe in addition to reading various posts, picking up a good book and getting the whole picture (pardon) of how Color Management is supposed to work, from one viewpoint. (oh, there's MINE of course... ) Seriously, there's a lot out there, and the one, hardest thing I've seen, in people's attempts to work with this stuff, is the frustration and confusion from trying to piece together various descriptions and explanations...