I'd say the bow is a little dated, but everybody has to start somewhere and this is as good a choice as any. Just because a bow is old doesn't mean it can't get the job done. As technically advanced as newer bows are supposed to be about the only thing they have any advantage over is that they are a little more quiet and have less hand shock. Your bow does essentially the same thing in that it launches an arrow at a given velocity.

So would your Carbon Extreme be compatable with mechanical heads? At 28" and 65#? Sure, why not. Just be sure you shoot a heavy enough arrow to carry enough momentum to make it work. That being said, almost any common aluminum or carbon arrow that you choose, if spined correctly, will be heavy enough for any deer or elk sized game.

Just be sure and learn how to tune your equipment so your arrows are flying well. After that the most important thing is to learn decent, repeatable shooting form and have fun.