I'd get an unrelated super pastel.
Continued inbreeding is not a real good idea. The reptile horror story of that type is the blood red corn snake. It was beautiful, but the line became so inbred that breeding success was poor. As far as I know, the line is extinct. Any "blood red" corn snakes available now are derived from outbreedings from that line.
Anyway, you should have enough babies to sell or swap a few for a new super pastel.