I thought I'd start a thread for seeds for 0.9.1a. Given I play Iron man, I sometimes run through a lot of seeds in a short while.
Mixed, Normal (I guess that is the MN)
MN-6648120409698677511
Duzhak has a Terran world (Farm+1, Ore+3, Rare Ore+2, Organics+2, High Gravity). Combined with the Aka Manyu as a gas mining world (volatiles+1), and the two barren planets you can make a completely self sufficient set of colonies within a single system in the core worlds, although with 125-200% hazard rating.
Old, Normal
ON-1162564266431220251
Due east of Corvas about 30 light years lies a yellow star with a Terran world (mild + habitable = 50% hazard) orbiting an Eccentric Terran world with (100% hazard with trace volatiles). Access to all resources, and even a stable point in the system for a comm relay. The distance does mean there is an accessibility penalty of -14% (compared to say Duzhak's +46%, that's a 60% difference).
Edit: Sorry, this is pure vanilla, no mods.
Edit: Although, has Nex already been updated to 0.9.1a already? I should look into that if so.