Well this is my pick. It's an Intel i5-3470 with 16GB of RAM and a Nvidia 660Ti video card. Motherboard is ASRock, which I never used before but seem to have decent reviews here. It's using the stock CPU cooler and doesn't have mouse and keyboard but it comes out to $1470 before tax and shipping.
*Edit: If you swap the case to something like a Corsair 200R, you save another $40 but it's a full size ATX case and not a smaller mATX case. Don't know if size is going to be an issue for you.
Intel Core i5-3470, EVGA GeForce GTX 660 Ti, Fractal Design Arc Mini - System Build - PCPartPicker