It's still pretty iffy, it sounds to me like you could only have one of them cooking at a time, so once you zap into the new one you need a while to make another backup during which you are vulnerable. Also, might be some complications to showing up as a younger version of yourself without your fancy gear and being taken seriously by your former underlings. And if you tell them about the clone in advance, any assassin is going to know as well and kill the clone first. Lots of room for complications, which makes for interesting stories.