Yes you can, although Nintendo recommends using one with it's own mains adapter. From what I have read you will have 3GB of space left on the console. Which should more than enough for updates/save data.
Shouldn't really need any accesories, It does come with a gamepad after all. Wiimotes/Pro Controllers are for multiplayer/alternate control schemes.
Edited by jambii267 at 20:55:48 22-12-2013
NNID: Jambii267 PSN: Dr-Jambii 3DS: 0216-0806-8561