2bbl with headers?

I'm sure it's been covered here many times but I am fairly new and just considering modifications. I have a 71 Scamp with 225 and factory a/c. I am looking for a little more performance so I bought a 2 barrel intake and carb, the guy gave me 2 rebuilt Carter 2 barrels and a Holley 2 barrel that needs work and a Super six air cleaner that fits one of the Carters. He surprised me by throwing in for $20 a set of Hooker headers for it too sweet right?
But now I have a ton of questions.
1. Is a 2 barrel carb and headers a good setup? Should I look for a 4 barrel set up or not use the headers at all?
2. Should I retain the egr system or block it off?
3.The headers have a fitting coming off cyl #1 pipe looks like a hose fitting where would this connect to?
4. How do I go about converting to electronic ignition? Where are the parts available?
Lots of questions I know but you guys are the experts and I am willing to learn.
Thanks guys