I am looking to change my 2012 Nemesis Hybrix 2.0 Cam to 1.5 to get a more comfortable slightly shorter draw length. Being new to archery, what would I need to change on the bow to accommodate this change? New cam, cable, strings, limbs? I assume I would have to go to Martin for some of the items needed for the change but are there aftermarket items available anyone would recommend? Thanks.