I have a question regarding correct spine for arrows. I have a Warfed riser coming and have the TT Blackmax 2.0 limbs ready, complete set up will end at 46lb draw weight. My arrows are normally cut at 29 1/2 inches, I'm getting conflicting spine (400 to some and 500 from some)but don't have the funds with Christmas around the corner to buy both spine and try them out. What's does everyone shoot at that draw weight and poundage? Any help would be appreciated! Point weight doesn't matter for now I'll just be shooting field points and can save for Brodheads later. Thanks to everyone in advance!