Well, you can have the other save, and not worry about the other events too much on that save, just do the ones that are forced, though you might come to a point where some events are tied to others (less likely on the slave route).
As for the codes, if you mean the one to skip events, I would have to recommend not doing that, as it can break your save. If you do, make sure you keep a backup of it. I thought there was one to switch routes, but I never tried it.
Personally, I make a new save at least daily, if not more, I am on save page 38, and it is almost full, while my slave save page is like 29. I have thousands of saves (they won't all load any more). lol I don't go back to the slave page often, but there are a few fun scenes there.