[member="Lady Kay"] maybe it worth writing off a relationship with the clans for now, and seek allies to help protect you from them.
May be try merc groups in the marketplace, also have look at last invasion and see what was the reason the winner won and loser lose. As I guessing it won't be long before we get invade again. As we have new sith faction as neighbours, which are the reason one rebellion is happening. We have Vikings to north of us, sorry mandalorians. Then we have two possible allies, The Galactic Alliance and The Silver Sanctum. Not sure where The GA stand on the Mandalorians raiding parties, but The Silvers do have an issue with Sith Triumph, but are allied to the Mandalorians. So I start diplomacy with them two factions, as GA will not like you sith neighbours icly, even if it does not help with the Vikings, sorry Mandalorains.