First questions are always what are you going to put it in and what kind of flying do you want to do? You've answered the first.

A solid enough & reliable engine, the SF isn't as powerful as the current generation of leading sport .46 engines. A 10x7 APC would be a good choice for it in that CAP, though she'll slip along quite quickly. Alternatively, an 11x5 as others have suggested will also work well.

Either will sustain sufficiently through manoeuvres, though a different technique is required of each. The 10x7 will fly the CAP faster, but requires superior energy management in converting speed to height (vertical). The 11x5 requires less finesse, making better use of that engine's torque to haul the airframe around under sustained load. Buy one of each, try them and decide which best suits your preferred flying style.