A 100% coconut oil soap will strip the natural oils from your skin. Following up with a 100% olive oil soap is not going to add moisture to your skin because you've already stripped the body's oils away. Soap does not add moisture. It's a wash off product. However, because of the lye discount, not all of the fats/oils are saponified and some are left behind in the soap, and theoretically, left on your skin. I don't think it would be enough to counteract the stripping nature of the coconut soap; however, I'm not a dermatologist or a scientist. Personally, I think it is a bad idea. Lathering up and rinsing off twice in the same shower seems overkill; especially since Americans tend to overdo the personal hygiene thing. But it's what YOU think that matters. If that's what you want to do, and you feel comfortable doing it, then, I say: "Go for it!!"
I can't help but wonder, though, what exactly are you trying to do/accomplish by doing that? Wouldn't you (and your skin) be better off by using a more balanced bar of soap? Any soap will get you clean. 100% coconut oil soap is extremely drying to many people (me included); whereas well-cured 100% olive oil soaps are not drying. 100% OO soaps are not that great if they're not well cured. They don't lather very well. However, a well balanced (ie mixed oils/fats) bar of soap is a great bar of soap if it has the "right" fatty acid combination. And by right fatty acid combination, I mean the right combination for your skin. I've created the "perfect" recipe for my skin. I have skin issues and need something mild and gentle. To me, "mild" means low on the cleansing numbers and "gentle" means high on the conditioning numbers.