Howdy all, new to OH!

Had my little hands on a '86 Civic for a little while now. I believe it's an AH with a EW2 motor. To be honest, it's a great car. Always starts, with a bit of choke, and is very smooth. Also, I can't believe I'm saying this, it's not that slow. Anyways...

Was thinking of giving it a bit of TLC, gettin my hands dirty and throwin' some money at it. The problem is...where do I start?

Is changing the carby anything to think about? (only ever worked with EFI's, not familiar with carby's at all!)
Headers and exhaust upgrade... worth it?
Can I get away with a CAM upgrade without a re-build?

So yeah, any advice would be greatly appreciated.
(google'd honda wreckers in the Mitcham area and got heaps of results, only problem is... they're GONE!! ALL GONE!! I asked a few businesses in the area and they confirmed it....what the hell happened? I feel like i've entered this game really really late, lol)

Cheers.

-Ned