I might have to infest this system of yours with my Carrier.I am at an outpost in Njulans, several factions there who all hate pirates. The outpost is very close to the star. The massacre missions are in the neighbouring system, Tjurodo, which also has an outpost but helpfully also has a compromised navigation beacon. So I sit at the beacon there making rank, but if ever I need a number of kills to make a mission before it times out (they're seven day missions I'm stacking) I can also use the mission point of interest markers. It's about as lucrative and convenient as I can make it. Might just sit here until I have hit Elite frankly. The money is amazing and then it's done! Have made over half a billion in a week, and did over half of Dangerous-Deadly last week (and that with being a pretty occasional gamer - two businesses and four kids will do that to a man!). But yes, take the missions in Njulans and then execute pirates in Tjurodo.