early access code is separate from the game code
so you should be able to attach the EA code to your main account
and your wife can just install the game and get a separate account

were a lot of mistakes are being made is 1.0 ppl buying the PC CE to attach to there 1.0 accounts which isnt posible you cant attach 2 pc codes to one SE account
if you want the physical CE attacht to your 1.0 account you need to the PS3 version which can be be linkt to your 1.0