If you have even a tiny vacuum leak, the car will most likely run terribly. At the very least make sure any unplugged hoses are plugged and any cracked hoses are replaced. You can spray brake cleaner around the intake gasket and carb base while the engine is running to make sure there are no leaks. If idle changes at all when you do this, you have found a vacuum leak. You cannot properly diagnose other systems if the engine doesn't get good vacuum.
I have a vacuum gauge hooked up in my engine bay to manifold vacuum at the intake, which is quite helpful to show changes in vacuum while tuning.
It would be extremely helpful to us if you took GOOD pictures and posted them here. Take pictures of the engine, linkages, wiring, and whatever else you think might need attention. Then we could potentially tell you what needs work done or what lines need replaced/rerouted. It might be good for you to start a project thread too so you can keep track of progress and others can give their 2 cents.