This sounds like an awesome project. Assuming the rotating assembly is good and not massive leakdown or worn out problems there, I'd like to see an approach to how most driveway hobbyists would approach upgrading the 352 one step at a time. Where would the hobbyist see the most bang for the buck, etc.
0. Swap that oil bath air cleaner for paper filter, just for grins.
1. Swap intake (mild port blend), 4 barrel carb, headers, duraspark ignition with recurved dizzy
2. Cam + valve springs
3. Rebuilt heads with decent valve job, oversized valves, mild port job, decent rocker assembly
3. Rebuild bottom end with 390 crank and rods
4. TFS heads
5. Bottom end with 4.25 stroker kit