Best option for me?

Hey, I'm looking to start running OoT in VC (preferably Wii U since I want one) and I have a few questions.

1. From what I have understood you can run Wii VC in Wii mode as if it were an original Wii and you can also install homebrew channel on it if you want to install a .wad game file. Is this correct?

2. If it will run on Wii U how does the upscaling to a higher resolution affect speedrunning? You can set it to output in 4:3 AR and at least down to 480p if it matters ~~(maybe lower)~~

3. If the game will run correctly within Wii mode are the GCN/N64 controller to Classic controller adapters working well enough to be used or would I have to use a CC/CCPro?

4. Also since I will only be able to get a PAL version how would this work with playing NTSC (JP&US) VC games? If there is a solution is it compatible with running PAL Wii U games?

I guess thats all I have for now. Thanks in advance.

EDIT: According to the Wii U wiki page the minimum output resolution is 480p

EDIT2: As for the N64/GCN controller to Classic controller adapters if they are good which are the best?