Where did I go wrong? Other than being a cheap ***

I agree with above, start simple. Also verify TDC on your balancer if not already done. What was the MPH in 1/4? Rpm at the stripe? Was the cam degreed in? What is your fuel system? Also timing, what initial, what total and all in at what rpm? What is the carb jetted at? Before you start throwing parts at it, make sure what you already have is up to task.
A shorter tire would help with the 410 rear, I ran a 26 inch drag radial and 410's, mine would trap at 5800.