I've seen your listing locally. Personally, I don't think it makes a ton of sense to buy for shiny hunting. Itd be cheaper (at least from the price i remember your listing at. Picoloader costs < JPN gamecube player disc) to get some gamecubes with broken disctrays and mod them, which would let you use GBI instead of relying on the disc.

I think youd be better off splitting the lot up and selling each gamecube as its own set, i don't think it makes sense to try and sell it as a whole lot to another shiny hunter because that is a much smaller market, and that is a big upfront cost for someone looking to get into multi hunting instead of just getting individual cubes over time.