Grant, I would probably start with a goal arrow weight, and base it off of what will keep your speed in the 270-280 fps range. Anything faster than this and your bow is going to start to get louder fast....
Once you know that goal arrow weight you can start putting together an arrow and components much easier. I am still shooting the same Goldtip Kinetic shafts I found I liked 6ish years ago. They were going to discontinue them when they came out with the new pierce model, so I bought 3doz bare shafts, and now I am just running out. To get the weight I want in a new arrow, I am looking at the FMJs, specifically curious about the T64 Tapered FMJ. The other one I am looking at is the FMJ in the old XX75 woodland camo, the nostalgia gets me....