RE: arrows
For arrows, I like to size my arrows so the back of the broadhead tips my index finger. Kinda like a draw check or clicker to let you know your at full draw.
Do a search for arrows by kelly. His charts are closest I have seen.
General rule for a 28" draw is 50lb bows shoot 2016 or 2018 well. 55lb bows shoot 2018/2020 alums well. 60lb bows shoot 2020/2216 well.
You can change point wieght to get desired spine reaction. Most shoot 125gr, but I do shoot 200gr phatoms with one bow. I wanted the extra wieght.