Right, into act 2, got a decent ship pillage and plunder... Or actually fight anything bigger then a pair of tugs.

Question is: Where to go?

The local L-points have to usual junk that makes Jafs whine, what i want is something better.

Those megafreighters usually have something worthwhile, but you need an occlusionscanner to detect them in space.
Other than that you can check out weaponsfactories and the like, stalk freighters that loaded valuable pods and follow them when they're out of range of station defences, but even then you still have to be careful not to get whacked by their escorts.

A couple threads:

http://www.gog.com/forum/independence_war_series/eoc_combat_and_piracy_tips_and_tricks

http://www.gog.com/forum/independence_war_series/i_war_2_pirating_candidates

And for some general good reading from someone who was "there":

http://www.gog.com/forum/independence_war_series/questions_about_the_i_war_games_ive_got_answers_i_hope/page1