Sure, mechanical keyboards are nice, but won't justify spending like an eighth of your budget on it. Look at this one: PCPartPicker part list / Price breakdown by merchant
| Type | Item | Price |
|---|---|---|
| CPU | Intel Core i3-6100 3.7GHz Dual-Core Processor | $110.99 @ SuperBiiz |
| Motherboard | Gigabyte GA-H110M-A Micro ATX LGA1151 Motherboard | $49.99 @ Amazon |
| Memory | Kingston HyperX Fury Black 8GB (1 x 8GB) DDR4-2133 Memory | $36.99 @ Amazon |
| Storage | Kingston SSDNow V300 Series 120GB 2.5" Solid State Drive | $38.89 @ OutletPC |
| Storage | Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive | $47.49 @ OutletPC |
| Video Card | EVGA GeForce GTX 750 Ti 2GB Superclocked Video Card | $123.98 @ Newegg |
| Case | Xion XON-310_BK MicroATX Mid Tower Case | $22.99 @ Amazon |
| Power Supply | Corsair Builder 500W 80+ Bronze Certified ATX Power Supply | $29.99 @ Newegg |
| Monitor | Asus VX238H 23.0" Monitor | $109.99 @ Micro Center |
| Keyboard | Cooler Master CM Storm Devastator Gaming Bundle Wired Gaming Keyboard w/Optical Mouse | $19.99 @ Newegg |
| Prices include shipping, taxes, rebates, and discounts | ||
| Total (before mail-in rebates) | $648.29 | |
| Mail-in rebates | -$50.00 | |
| Total | $598.29 | |
| Generated by PCPartPicker 2016-07-02 04:30 EDT-0400 |
This rig offers a motherboard with an LGA1151 socket, which will be great for upgrading in the future. In the future, it'll be possible to buy an i7-6700 when it becomes cheaper for an easy upgrade. Memory still has one slot open for easy upgradeability in the future. I also slapped on an SSD, because that shit's good. It's the first thing you notice every morning as you boot your PC: "Hot damn. This Raytiger fella was right. This shit is good."
If you upgrade within like... 4 years you can simply resell your 750Ti, get an i7-6700, an extra stick of RAM and upgrade your videocard.
I personally have a mechanical keyboard (cherry mx blue users are annoying twats, cherry mx black masterrace) and I wouldn't justify spending such a large chunk of my budget on something so minor. Besides: media buttons are absolutely fantastic.