Should I sell 3DS for psvita?

SO im thinking I should sell my 3ds as I don't play it much and I think im a bit outgrown of its games as they are pretty boring. I have the first 2 Tom Clancy 3ds games and while it was fun at first it got boring really fast. I recently saw the psvita and it looks epic. I know it comes out basically next year so should I sell my 3ds now? Sell it later? Keep it? Or get the Vita? I want some good money on it so Please include some goodideas ( websites ,craigslist etc. ) I should sell it on. I had a dsi so I might sell that, i have 7 ds games 2 chargers,a 3 travel packs ( 20 each) and just other stuff like extra screen protectors and stylists and car-stuff etc. Please help me as I don't want to lose 100$ i spent before on stuff and but thanks for your feedback!