The carbon knight is a really nice bow. I almost bought one a few months ago but ended up with a new 2014 PSE Drive LT. With 60#'s you're going to be just fine. Like others have said shot placement, KE, Penitration, and a good Broadhead are things you should worry about. With the technology of new bows, you will probably only be 10 fps slower than the IBO rating of your bow at 60#'s. Draw length and arrow weight will also effect your arrow speed, but without knowing what your arrow weighs, and your draw length, it's hard to say how much. For deer you will want to be in the 400 grain total arrow weight range. That will give you plenty of KE and good arrow speed (a happy medium in my honest opinion). Get a good fixed blade broadhead and practice from now until then (shoot till your arms fall off
). Two good fixed blade BH's to look into would be something like a slick trick standard 100 grain, or an QAD Exodus 100 grain. Those are two really good broadheads that are tough, penitrate great, and fly really well. Good luck. If you can post some more info about your setup we can give you more information.