Here is a build based off of the Austin Evans one I linked before, however, it has the best CPU and GPU you will be able to get for that budget, however doesn't include the mouse and keyboard as this is more up to decide, you can still easily buy a mouse and keyboard with the remaining $30, they won't be anything amazing but it's a much better idea to get a okay ish mouse & Kboard now, and upgrade later, rather than getting a sub par PC and having to rebuild parts of it later.
Build comes in at $750 with this monitor...