Is my engine performing as it should??

Sounds like you have a lot of good parts but may need a little more cam. I'd switch to something with a bit more duration and lift to help the motor pull stronger up top. Something like the Comp 20-224-4 Extreme Energy XE274H would work well with a 2400 stall converter. Use the springs Comp recommends. I'd consider a vacuum secondary 750 cfm carb too that is jetted properly. Maybe the Street Avenger 770. Make sure you have a performance curve in your distributor. Good Luck, you're gonna need those sticky tires!