What’s your draw length? If assumed to be 28 inches than you need a 29 inch shaft from the valley of the nock to the bottom of the point. So add 5#, than if your points are 125 grains or heavier add another 5#. So your shaft spine shuld be 55-60#. If your draw length is less than 28 say 27 inches, than 50-55# would do it. Hope that helps.
There are those that believe less spine is better. And there are those that believe more spine is better – I always side on more spine.