Pathfinder Sorcadin?

[Bovine Colonel]

Alright so I really do like the concept of an arcane paladin and I'd like to play one in the campaign I'm in. However, I can't really think of a decent way of making a full-spellcaster paladin gish using only Pathfinder material. I'm using 20 point buy, the characters are level 12, and my build as it stands right now is Paladin 2/Synthesist 10. Can anyone help me out?

Edit: Also, is there any chance this could be combined with genuinely decent blasting?

[Coidzor]

Synthedin is pretty good too though, no?

And you shouldn't be looking to blast as a gish, really. That's more something that's a last resort and not your style. Because gish.