Replacing cam, want suggestions

I have a hard time believing the heads go 300, but I'll operate under the acceptance they do. For an Engle solid, I'd go with an EP series lobe. They are fast rate and asymmetrical which means they lift open and close at different rates.
EP-55/EP-55 on a 108°LSA. That lobe is 296°advertised duration, 259°@.050 .584 w/1.6s