Hehe, I admire your enthusiasm, but it could take a decade to reproduce a Predator-like Nep from parent plants. You'd have to grow the parents to flowering size, which could take as many as five or six years even in good conditions. Then you'd have to wait for them to flower, check to see that you indeed have a male and a female, and then find a time when they're both in bloom at approximately the same time. I don't know how long that would take, it could happen on the first flowering season or you could have sorry luck and it might take years. Once you get flowers pollinated and seed set, it can take up to a year just to germinate the seed, and then several years to get them to seedling size, at which point they'll begin to show adult traits and you can start looking for Predator-like offspring (which isn't to say that you'll necessarily get any.) Better to just collect some more readily available plants and save up some for an established Predator.
~Joe