Ive had my 3ds set up with. Gateway for awile now. I just picked up another for $75 with cib smash bros and pokemon y. I plan on selling the games to lower my cost. My question is can i use 1 gateway to be able to play games. With my wife. And also. Can i. Just put my emunnand sd card in the 3ds i just. Baught. With the gateway cart and have it load up exactly the same as my old 3ds (i plan on giving my wife the red one i was using before and keeping the black one i just picked up.