Motherboard $200
You can get a solid mobo with wifi and can overclock for $150
If I had your cash I would spend $200 but based on your temperament I don't see a reason you shouldn't just save your money.
i7 CPU $220
You mean i5. You can't get an i7 that low unless it is used.
GPU $400
How do you feel about noise coming from a GPU. If you don't care at all then just save yourself $60-$70
SSD 128GB
I strongly suggest getting a 256 GB SSD. The file sizes of indie games are great but AAA games are extremely obnoxious.
Water cooler
If you are getting a swifttec H series cooler ok. If not then I would be very mindful to ask what makes that cooler better than the swifttec. There is a certain cooler that matches the swiftec H series but I can't remember what it is. Regardless you don't really need one this expensive. You could cut the price in half.
Mouse $50
Normally I would say this price is right but I feel logitech hit it out of the park with the Proteus G502.
It is worth considering spending the extra $20.
Monitor
I strongly recommend waiting and
preordering the Acer XB270HU.
It's an IPS 144hz panel with Gsync and ULMB support that is slated to be released this year.
It will be expensive but if you find a better deal on the OS/Office software and reduce your expenses on the GPU and motherboard you'll be able to squeeze it in if it costs $500.
If it costs more than that I would understand if you are reluctant to get it but it will be worth it.