If you like Gold Tips, you will most likely end up shooting 3555's. The best way to tune the GT's is to get a tuning kit, which contains a bare shaft, various weights, nock and tip adapters, and a nock. Black Widow sells these for $8 (best $8 you'll ever spend), and there may be other places you can get them as well. You will also need a point, probably 125 grain. Once the arrow is tuned, it should match up with any of the popular 125 grain hunting broadheads.
The tuning shaft contains instructions for tuning. I find that a dab of the same hot melt used for aluminum arrows helps keep the thing together when I'm shooting the tuning shaft. When I want to change weights, I just hold the end of the tuning shaft in boiling water for 10-15 seconds and pull out the insert with pliers.
You'll probably end up with a 125 grain point, another 20-50 grains of weight up front, and no additional weight in the back.