I just use a large set of keywords to search, i pick the most important type of sites (everything but trackballs and that kind of things) and i select to only pic pages with less than 200 links and with the domain with 1 or more PR and to skip sites with unknown PR. Its on the data tab when you set one site.
About how to set the software to work fast and fine, i will share with you my settings. Download them from my site and import them to GSA SER. Dld from
www.yenerich.com/GSA_SER_Settings.zip (import it as a zip in the OPTION page, just look in the left down corner the restore settings) this will make it works fast and fine. But
the PR thing must be done one by one site by hand, each time you set a new site.
I use GSA SEO indexer and linkcentaur.com for the pings.
I have no relation with any of the mentioned companies, i am not making advertising here, im just giving advice (or trying to do it)
GSA could be really great if you find how to make it run with good settings, thats why i share some good ones, to make your life easier the first days