Choose the 4560's. The 6075's are way too stiff. I've run a quick OT2 simulation for your bow with the Carbon Express Terminator Lite which is basically the same arrow and the spines will be identical. Eastman makes both arrows under the 2 different names.

Unless you use a 125 gr head the shortest you should go with that arrow is 29".

Your completed arrow will be about 384 grains w/ 100 gr tip.