Just curious, have you measured your drawlength on this bow are are you assuming it will be the same as it was on a compound? Best to measure it on this bow. Draw an arrow to your anchor and have someone mark the arrow where it hits the front of the riser shelf. Measure from the throat of the nock to the mark. Then if you have a bow scale, use it to draw to that mark and measure the weight at your draw.
Your EXACT draw length and the EXACT WEIGHT that you are pulling are essential in finding the right arrow for you, don't use calculations or estimates on these 2 measurements.