Need to get int to all 3 social skills, without dipping Orator.

My char is a merchant, a smuggler, and a pirate. You can't have a pirate captain who can't intimidate, you can't have a merchant who can't negotiate, and you can't have a smuggler who can't lie. However, I can't figure out how to get Int to all 3 stats, and don't have the feats to spare to pick up Orator. What I've got right now is Clever Wordplay to give me Int to bluff, and Coax Information to give me bluff to Intim, but I still don't have a way to get a decent Diplomacy check.

Note: in the off chance that it's relevant, I get like a trillion skill points per level and most everything is a class skill for me (Gestalt ftw), so if you know how to get something obscure like Craft (Basketweaving) or Profession or whtever to Diplomacy, that'll work in a pinch.

Edit: just noticed i mentioned "dipping" orator. Orator is a feat, not a prc or archetype. Sorry if anybody went looking for the Orator class.