Yes, Flash Fire is a beast when used right, and I think it'll be a good connection for the team. Gengar coverig my fighting and ground weakness, Houndoom covering for my Psychic Weakness, and Scizor for a good cover on a lot of types and definitely a great SD Physical sweeper.
Tell me if I got this right: Isn't it more challenging the farther you get into the BT while the beginning of it is pretty easy?