Good idea to check with the folks at Kustom King for their recommendation when you order. Not knowing everything about your setup, I'd say that shafts in the 55-60# or 60-65# range would work fine. Among other things, one rule of thumb is to subtract 5# of spine for every inch of draw under 28 inches. In an 11/32 shaft at those spines and your arrow length, the finished arrow will likely come in around 525-550 with a 145 grain head, a good weight for deer size critters. Your FOC with a 145 grain head will be in the 10-12% range, I believe. That's an educated guess based on experience. Would need a balance point measurement to calculate it exactly. Good luck. Woodies are fun.