I just bought some 30x gold tips to shoot foam with. Arrows are gonna run about 28.5 long and total weight will be 380ish with 100 gr points. I thought about running the 50 gr nibbs in front but Im thinkin it wont shoot very good with the 50's?? Whats yalls thoughts and what gr nibb would you shoot in these arrows? Im gonna shoot them out of a Elite answer 70 lb max.