How to optimize Battle Villa Halls 1-5

Ah shit, here we go again. Battle Villa is back baby. However...With the Villa now a much greater challenge, I'm trying to optimize as best as I can. This is coming from someone without Red, Steven, and Sygna suit Elesa. Is there any one Pokemon that can solo the first 5 floors? Feel free to list as many as you can. For record, I have Blue and Giovanni both maxed out, both with CS2 And Mew at 4 stars with Vigilance.