I have a mindblade magus as one of my PFS characters and they're quite fun. You just have to watch out for the spells with the thought component having penalty to concentration checks... it's a large penalty and best to just play around it i found.
Look up the thought component here
I've decided on an Investigator and will will use the Empiricist archetype. I'm working out how they work which will guide me on who they are and help me make their background and make them fit in.
I've also started to add some complications by being a half elf but taking a large selection of shadowy drow related alternate racial features. They're going to be a bit weird yet very clever and able to use their smarts to talk their way out of trouble (they hope).