64 Dart GT (273) Vert--Let the Bolt-ons Begin!

So, back to the original questions for the 64 Dart GT Vert (stock 273 2bbl)--

Phase I help please: Change Cam and Convert the 2bbl to 4bbl.

Wrestled with old rebuilt parts vs. aftermarket. My wrenching coach (a friend with a shop) has talked me into aftermarket--wants me to do Edelbrock. So here is the list are the parts I need specific suggestions for part numbers . . .

1. Which aftermarket intake?

2. Which aftermarket 4bbl for that intake?

3. What specific CAM to buy and bolt in?

4. What headers, if I need to change?

5. What CAI will work on the setup you suggest?

6. Will I need a new linkage?

7. What am I missing for changing out the CAM and going to a 4bbl?