RE: Enough Kinetic Energy?
I totally agree with the above to answers....you'll be more than fine and let me also congratulate you on a fine purchase and like you mentioned in the thread starter, the Trykon over the older model bows will significantly retain more speed resulting in more technology. I was actually shocked that the Trykon at lower poundages shot faster than my 01 Hoyt VorTec....that says alot of technologies.
I would not however go to an ultralight arrow to retain speed...stay at a good midrange weight to keep some speed you want and still have a heavier mass to push through...remember a bow has a set amount of KE until extremes are taken and a heavier arrow has more benefits than a too light one...
Again, congrats, get well and have a great season.