New To This Stuff, Need Help

I've been thinking of buying a few beys so I can make a top tier limited format combo. The combo I'm trying to make is Screw Dragonis WA130MF. Screw is one of or the best attack wheel in the limited format. WA can defend from low defenders and adds a bit more smash attack to the bey. MF or Metal Flat has the best stamina out of all the flats and rubber tips. It also goes very well with Screw.

Tell me if you would see this as a top tier combo.