The PLX is cut past center, so should be pretty easy to tune. Not much trajectory at 17 yards, so no particular reason to look for light weight arrows. I would either select a Gold Tip trad shaft in .500 spine with a 125-150 grain broadhead/point for a mid-weight arrow, or a .400 shaft with a 175 grain or heavier broadhead/point for a heavier weight arrow. I'm assuming your draw length is somewhere in the 27-29” range. If it's outside of this range, my advice might change.
The guys at BW have a lot of experience with their own bows, so might want to give them a ring on this.