Is this build good, what fps can I hit on Minecraft, and some other games?

It's a good build just the gpu is kind of a mid -range type with minecraft probably can squeeze out 55 + fps at high settings a little lower at ultra settings other like dayz, team fortress 2, Cod, medium settings will be the best fps

Well its not too bad. You Dave a locked cpu so don't waste money on a z87 mobo also fast ram is also a huge waste of money so with the money you save from that put it towards a better gpu as the 750ti is low end

With the GTX 750 Ti you can run Minecraft using the highest in-game settings.

Here's the frame rates you can expect in other games-
http://www.anandtech.com/bench/product/1130

Play league of legends best PC game in the world!