Those routes are quite old and may be rough to travel. But you may purchase them nonetheless. My spies tell me that those hyperspace lanes are being recharted as we speak. They will follow the same path, though they will account for the recent Galactic Planeshift. When they are updated, your hard drives may be automatically updated at your local Spacer Guild port.
The soulstone is a finicky artifact of the Force. One that I have yet to study myself. May you be able to unlock its secrets.
Your offers of the Null Dust and armor is quite fine. Both of those will be acceptable payment for the routes and the stone. Items contributed to the Black Market are always appreciated. Enjoy your new wares. And remember to refer us to your underworld companions.
Kaila Irons