RE: Graphite arrows and heavy broadheads
Gold Tip's brass insert work great to fine tune arrow for traditional setups. You can add them in 10 grain increments.
I'm shooting a Gold Tip 5575 @ 48 lbs with a 200 gr Muzzy and 100 gr brass inserts. I don't remember the length off the top of my head. Your arrow is fairly short to start with, so you may have to add more weight. A little bareshaft testing will tell you just how much weight to add.
I also have a 62 lb longbow that I'm using 7595s with. Carbons with a lot of weight up front hit like a ton of bricks.