That will work just fine. CTGP-R does support Wiimmfi out of the box, so just follow any tutorial for Wiimmfi on a WiiU ( for example, this one: chadsoft.co.uk/install-guide/ ), and it'll work.

86030 is an error with your router / internet connection, looks like the DNS lookup isn't working properly. Did you set any custom DNS server in the Wii settings?

Leseratte, I keep getting the same error code on the Wii. My DNS servers are the exact same that Mr. Bean recommended. I've been trying to play MKW online, but the error keeps coming back. It doesn't happen until I select a game mode... What could be causing this and how can I resolve it?