Is my engine performing as it should??

Since you are in high school and probably have a limited budget, I would suggest leaving the whole shebang pretty much alone and just have fun with it. Cars are a great place to spend your cash but so are girls, and at your age you still get some say in the balance between the two.

Have you actually weighed the car? You might be surprised how heavy a street can can really be.

Are you racing on street tires? If I had a couple hundred bucks burning a hole in my pocket I'd get some track tires. Your 60' times will drop and your street tires will last a LOT longer. You will be a lot more consistent as well.

Next I would play with a 750 carb with controlled secondaries (non-double pumper!!!). A 1" open hole spacer (cheap to try) might help your top end. If so, a bigger carb will certainly help.

A better converter would be next (spend money for a GOOD one), then maybe more cam depending on your gears.