Solid Roller Cam in a LA 360 and Edelbrock RPM Heads

I don't understand comps spring recommendation....they recommend the 914-16 for the cam I have as well. I run their XR286R solid roller with 939-16 springs set up at 1.85". That gives 185 lbs on the seat and about 465 lbs open. Their spring recommendation is a little light for my comfort level....sounds more like a flat tappet spring.