-Dodge essentially already is a flat +1 bonus to AC in Pathfinder. It gives a permanent +1 dodge bonus, and dodge bonuses stack with one another. You do lose dodge bonuses when flat footed, but that only makes sense.
-Pathfinder adds request checks on top of the usual attitude adjustment checks to Diplomacy. If that suits your purposes, you might not need the Diplomacy house rule.
-There are no longer XP costs in Pathfinder. Requiring some monster hunting for materials still sounds fun, though. Maybe having them could give a bonus (or lacking them a penalty) to the craft check.
As a heads up, the character I have in mind is a combat maneuver happy fighter that splashes into Bard a couple levels. At level 1 he'd be going on about how "I've spent most of my life fighting, but my true calling is storytelling!" I've also considered going pure fighter so I can get Vital Strike, but that'll ultimately depend on what the rest of the party looks like.