Well I bought a 360 last summer for the same reason, I'm also a huge rpg fan! And now... I'm selling it! Honestly 360 rpg's suck. I bought blue dragon first, and it's just awful, LO is boring...
I think you should wait a little more and don't forget that you're gonna have to buy a battery for your pad and a wi-fi thing to go online.
If I were you, I'd wait for eternal sonata, valkyria chronicles, the last remnant and white knight chronicles.