I'm not sure that any quad frame would be wrong to put a 6S setup on. The thing is....in a crash....it's possible for something to break even on a 3S setup. So, the frame choice is still up to you.
As for props....I've tried 3 blade 5" props on my ZMR and I just didn't like them. The two blade props give the quad a more "locked in" feeling. I've used regular style quad props and they do work very well. Although, I do very much like the 5045 and 6045 DAL bullnose props.
On the other hand....I have a Holybro Shuriken 180 quad. It's a great lil quad and it comes with 3 blade 4" props. I've tried two blade props and four blade props......the three blade props just work better.
So, my point is this.....in regard to the props....it's gonna be a "trial and error" deal for you. Some you will like, some you won't. I'd suggest buying a set of 4 props of one style and a set of 4 props of another style and just try them out. When you start running a 6S pack, be sure to monitor your motor and esc temperatures.