Split overlap would require that you advance it 6 degrees which might be too much. I'd probably start with 4 degrees advanced. Why does the cam grinder think it should be straight up? The usual recommendation is 4 degrees advanced. 114 is a wide lobe center for that application. I can't tell if you are building a bracket car or a street car. The gear ratio seems like a bracket car but that lobe center seems like a street car or an EFI car.