273 wont start

Thanks guys for not ribbing me. I actually used a magnetic parts grabber that extends like an antenna as a guide to help with TDC. Worked alright. I was curious about the timing because of what my friend had said. and after the fact that my adventure started when my car had a dead battery. me being me though instead of just buying a battery,I decided to change the battery,plug wires,plugs,rotor,cap,points,condensor,coil,voltage regulator,starter relay,starter,plus thermostat,temp sender,oil pressure switch. Started but had a rough idle and wouldn't stay running. So I just rebuilt the carburetor and added new fuel filter. I have a new fuel pump to install but am wondering if I have just opened a can of worms instead of updating 45yr old parts. After all the parts I have changed you would think it would run like a top. What should be next on my list to change after you have read this and read my issues? The kicker to this whole adventure is that 2 days before the dead battery it was running great. I am at a loss. Any info and pointers are very much appreciated.