Should be simple. I have a flawless Haxorus and a flawless Japanese Ditto. Even if I wasn't going after a shiny, a flawless Axew would only take 5-10 minutes depending on how long it takes for the egg to hatch. Maybe longer if I'm unlucky, but an easy RNG regardless.
Depends on what you're looking for. I don't have many level 100s, unfortunately, aside from Golem and Ninetails , who are both shiny. Please give me an idea of what you are willing to trade and I'll see if I have it.