I do rare runs with my ASP. 80 Tonns cargohold and no troblem to fill it up. My route for you:
1. Orrerian - Sharon Lee Free Market (Anarchy - they buy everything )
2. Leesti - George Lucas
3. Lave - Lave Station
4. Diso - Shifnalport
5. Uszaa - Guest Installation
6. Zaonce - Ridley Scott
Thats the "Lavecluster"... fill your holds. You get around 70 tonns. Then head out to this destination:
1. HIP 10175 - Stefanyshyn-Piper Station (sell all stuff here its 242 Ly from Lave, so you get max Profit ! )
2. Momus Reach - Tartarus Point
3. Witchhaul - Hornby Terminal
4. Fujin - Futen Spaceport
5. 39 Tauri - Spaceport "Porta"
6. Tarach Tor - Tranquillity
7. Tanmark - Cassie-L-Peia
8. Utagaroar - Fort Klarix
9. Chi Eridani - Steve Masters Station (after this stop my hold is normaly full)
10. George Pantazis - Zakam Platform
11. Epsilon Indi - Mansfield Orbiter
12. Altair - Solo Orbiter
13. Xihe - Zhen Dock
Then return to Orreian and cash in

its a huge roundtrip and you should be ready to defend yourself. My tips for Type-6 Commanders and ships with weak weaponary:
Always equip Point defense turrets, chaff & flar launcher and shield cells in case you get interdicted. Try to get away until you are owing an ASP. Then shot back... Don´t forget a matching fuel scoop !!! For Type-6 around Class 3-C or better. And upgrade your FSD as soon as possible to get around 20 Ly jumprange laden.
And always... please... eqiup an shield ! Don´t fly without to max cargo. Every pirate will get a slobbery mouth if they detect you are shieldless. Its not worth the few credits. For Type-6 at least class 4 shields and ASP class 5. Always try to get the best what you can afford. But keep insurance Money at bay !!!! Don´t risk to much...
Hope to see convois soon

would be great to escort traders with my warfare ASP !
Its getting me around 2 to 2.5 million a roundtrip. And its fun to me. Hope you can enjoy this too !!!
Jim...