Then you say you don't have anywhere near 200 mods. One is left to wonder then what you're getting at here.
RAEVWD is a visual enhancement, and takes up a modest amount of VRAM. Impact on system memory should be negligible. OC doesn't take up anything more than playing the game without it since it simply shifts access to the exact same resources to a different location. All Natural may take up a bit more, but since it doesn't add boatloads of NPCs and AI packs, it's probably not taking up a significant enough amount to matter.
You haven't said what else of mine you're using, but I doubt my village mods have gone down in history as memory hogs.
In fact, you haven't said what you're using at all, other than FCOM, or been specific enough about your system specs to make much of a judgment about the over all problem. For all any of us knows, you're on a laptop with a shared memory pool.