RE: Carbon Arrow Spine
If you shop around you can get carbons in just about any weight you want. I think Gold Tip has some different versions of thier arrows as well with different weights. Most carbons are heavier in the camo version as well. Not always, but most of time. If you like the GT's they may have the weight you want in a different model arrow.
Also depending on what your set up is the arrow may be stiff any way. So going a notch up really wouldn't affect anything but your weight. The numbers on the arrows and the charts are sort of missleading sometimes. Lets say I have a carbon arrow that is a 45/60. This means it will spine up 60 lbs, normally at 28 inches. Well I don't shoot 28 inches, I shoot 26 inches. And let's say I shoot at the lower end of those specs, say 45 or 50 lbs. Sure the arrow chart shows it working with my bow, but if you follow the chart farther you see that at my arrow length this arrow will actually spine up to about 70 lbs. So that means with my set up it is WAY stiff. However stiff arrows are better then weak ones. You may have a little trouble getting your practice tips to hit with your fixed blades, but you may be able to tune them close enough. I have shot very stiff arrows out of my set up and tuned it, so it can be done.
What is wrong with your bemans that you want to switch to Gold Tips just out of curiousity? Or do you just want to try something different?
Paul