Topic: Nintendo ID choice

Hey guys, I have a bit of a problemo. The only WII u i have access to is my sister's, and I decided to buy Hyrule Warriors for it. However, i also decided to buy a wii u for myself somewhere down the road where i get a little spare cash. So the question is, should I register my Nintendo ID on to my sisters wii u to buy the hero of hyrule season pass aswell as get the demon king costume pack so they're under my name for the purchase? The biggest problem is that an ID can only be on 1 wii u, so i'm a bit worried i won't be able to claim my purchases down the road for my own Wii u. Any recommendations?

Did you download the game, or buy it on disk?
If you've bought the disk copy, you may aswell wait until you have your own WiiU.

I did buy the Disk.

Ok, I just did a bit of research and i can unlock my ID on my sisters console with a system transfer.