Valve springs for .528 MP cam

My heads are already set for doubles, if need be. I can get a set of the Comp springs for around $100. I don't want to kill it with too much spring, but I don't want it floating at 5,500 either. The 924-16's look like a pretty soft spring for a double. If anyone has a suggestion for an appropriate seat and open poundage, that would be useful also. Thanks.