While you may be right and things may work fine, I'm not sure I'd go quite that far. Asking a fast SSD to act as 2 drives would seem to be okay, but acting as 3 at the same time might be pushing things too far. Why not just add another SSD for either recording or sample libraries? Its obvious that you didn't skimp on the rest of the computer, why skimp on something this easy
Besides, drive space is cheap and you can never have too much of it(looking around my setup, I count at least 16 drives and some 20TB)