Can you run a compression check for us as well? We ought to make sure the engine is healthy first.
Yeah the cam sucks. But it's pretty small, hard to imagine picking up loads of low end from a cam change. I do agree that you'll be able to pick some up but I wouldn't expect it to be a game changer by itself.
Bump that initial timing up per recommendation it'll help.
Headers will help build more low end to midrange grunt. That's going to be one of the biggest changes you can make for cheap. I second the summit headers suggestion. They have nice thick flanges unlike the hedman or hooker cheapo headers.
People don't want to spend money on decent torque converters and gearing but this is probably the single biggest area you could change and would transform the car from mundane to monster.
If you're on a tight budget, this is the order I'd go in:
Compression check
Correct timing curve
Summit headers
Edelbrock air gap or similar Intake manifold/carb
Converter
Gears
Cam upgrade (to match your new converter and gears)
Do this stuff and it should hit pretty hard in the launch.