Buying the gear runs is probably your best bet. I know POT5 empire sold a lot of stuff for credits on a raiding schedule.
<Provectus> Garage Sale
http://www.swtor.com/community/showthread.php?t=722149
Nightmare Titles
Dragonslayer (from Scum and Villainy): 12,000,000 CR
From Beyond (from Terror from Beyond): 8,000,000 CR
Warstalker (from Explosive Conflicts): 5,000,000 CR
Other Titles
The Eternal Warrior (from Hateful Entity): 12,000,000 CR
Dread Slayer (from Dreadful Entity): 5,000,000 CR
Mounts
Titan 6 Containment Vehicle (from Scum and Villainy): 8,000,000 CR
Avalanche Heavy Tank (from Explosive Conflict): 4,000,000 CR
Helix Hyperpod (from Terror from Beyond): 8,000,000 CR per week
Due to the rarity of the drop for Helix Hyperpod, we are willing to try and farm this for you weekly till you get the mount itself, but please keep in mind that you are required to pay 8,000,000 CR per week till the mount drops.
Vanity Items
Crest of the Dread Masters (Mask from Hateful Entity, includes the title): 20,000,000 CR
Dreadful Orb (from the Dreadful Entity): 8,000,000 CR
Gear
Dread Forged Set (minus Implant and Ear): 10,000,000 CR
Dread Forged Implant: 1,000,000 CR
Dread Forged Ear Piece: 1,000,000 CR
Then again, it devolves the game into P2W at that point which defeats the whole purpose of earning the gear with friends in the first place, since you'll have bought the gear and still not have a guild of friends to raid with. Hopefully the price list is useful with negotiations or your decision.