Some emulators have an issue with certain games like Flock step or Micro-Row and lag a lot, even if that's corrected, some analysis has to be done to verify loading times are not faster than a physical/VC version.

It's totally fine, as long as the mod doesnt affect the loading times or gives you any kind of advantage, you'll be ok. I'm playing with that setup too :)

I used an account set up in the USA to buy it in VC if you're interested. Japanese copies are getting a bit too expensive.

Hi! I'm interested on running this game, and was wondering if USB Loaders are allowed given how this game was so scarcely distributed.

I've been running this game for a while and had the same problem so then decided to buy it in the Wii U VC because it was fairly cheap, and then realized after a month of running that I could never beat the WR like this. While you can just press the reset button in the Wii Console, the Wii U doesn't have this feature, and you lose time (about 5 seconds at least) in blindfolded menu'ing and rebooting.

In other words: Wii U VC is slower, and unless we find a way over the reset limitation, optimized Wii U runs are no match for optimized Wii runs.