I use a 14 pound Wolff recoil spring. I tried 12,13 and 15 pound springs. 14 felt the best to me with my load. I know some guys use and like the lighter springs without issues.
As far as the recoil spring for your load. That’s something you will need to workout. If I was starting out with your load today. I would do the same I did before and get 12,13,14 and 15 pound springs and see which one I like and is 100% reliable.