Hello Jay-R,
there is a great user guide about FSB Pro where you can find detailed information about each instrument: https://forexsb.com/wiki/fsbpro_guide/start
The data is the same as in EA Studio and in FSB Pro you can not create Portfolio EAs. It is a function available for EA Studio.
The more generators you run, the slower it will become but that will not affect the performance.
Regarding the last question…Petko should give the answer :)
Hope that was useful :)