You are there – DumpSec will provide the reports for permissions and about groups. I always save as Tab separated text files (.txt). If you use comma separated your columns get messed up in the import to excel whenever the data contains a comma (i.e. lastname, jr.)
The multitude of reports and the mass of data can be daunting. I am HIPAA and GLB but not Sarb-Ox and DumpSec gives us everything we need with some manual labor. I also use LogLasso to acquire logs from the various workstations and process using Log Parser 2.2. Both are free, LogLasso from Log Logic, and Log Parser from Microsoft. You will have to develope your own scripts to cut down the manual work.