Hi michaelsmith.
At the risk of sounding curt, there are answers to all of these questions here. There is not a simple answer to these questions which is why this thread is hundreds of pages long:
Portugal GV Fund Comparison? - Residencies & citizenships 
/ Portugal Golden Visa 
- Nomad Gate
Its just so much work to put together and maintain a FAQ, no one has done this but I am sure if you wanted to read through all the posts and put this together it would be most appreciated!