You shouldn't get the Viola. I can't make a single sound on the Piccolo, but I'm not the best at flute either. I think the harp would be cool (the pedal harp in specific), but I haven't interacted with one yet. The Violin is a pretty good instrument, but there is a long time where you may not sound good because it's quite difficult. Guitar is simple and easy, but I don't personally like anything besides classical guitar on it (which is a lot more difficult than regular, unless you're talking about the electrical guitar, which I'm a lot worse at).
