RE: Bowtech equalizer? and arrows?
If your draw length is 28", the Equalizer might not be for you. The max is 27.5", unless you want to come down to that or tinker with it. It shot pretty good and I'm setting up one for myself.
I shoot the Maxima 350 @ 26" and 100 grn. My total weight is around 360 grn shooting 60#. My bow shoots great. The 300 is around 8.1grn/inch, pretty close to the 350. Depends on the length of the arrow, you should be find.