1590$ PC gaming build

Looking to build a gaming PC. Will need monitor. Prefer intel CPU's but I can be swayed. I do not memory as I already have 16GB of RAM I am not currently using.

What I have so far:

[PCPartPicker part list](http://pcpartpicker.com/p/tCzrYJ) / [Price breakdown by merchant](http://pcpartpicker.com/p/tCzrYJ/by_merchant/)

Type|Item|Price
:----|:----|:----
**CPU** | [Intel Core i5-4690K 3.5GHz Quad-Core Processor](http://pcpartpicker.com/part/intel-cpu-bx80646i54690k) | $239.99 @ Amazon
**CPU Cooler** | [Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler](http://pcpartpicker.com/part/cooler-master-cpu-cooler-rr212e20pkr2) | $34.99 @ Amazon
**Motherboard** | [Gigabyte GA-Z97-HD3 ATX LGA1150 Motherboard](http://pcpartpicker.com/part/gigabyte-motherboard-gaz97hd3) | $107.24 @ Amazon
**Storage** | [Samsung 840 EVO 120GB 2.5" Solid State Drive](http://pcpartpicker.com/part/samsung-internal-hard-drive-mz7te120bw) | $79.00 @ Amazon
**Storage** | [Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive](http://pcpartpicker.com/part/western-digital-internal-hard-drive-wd10ealx) | $99.75 @ Amazon
**Video Card** | [EVGA GeForce GTX 770 4GB Dual Superclocked ACX Video Card](http://pcpartpicker.com/part/evga-video-card-04gp43774kr) | $393.99 @ Amazon
**Case** | [Thermaltake Commander MS-I Epic Edition (Black/Red) ATX Mid Tower Case](http://pcpartpicker.com/part/thermaltake-case-vn400a1w2nb) | $56.99 @ Amazon
**Power Supply** | [EVGA SuperNOVA NEX 750W 80+ Gold Certified Fully-Modular ATX Power Supply](http://pcpartpicker.com/part/evga-power-supply-120g10750xr) | $110.19 @ Amazon
**Optical Drive** | [LG GH24NSB0 DVD/CD Writer](http://pcpartpicker.com/part/lg-optical-drive-gh24nsb0) | $27.95 @ Amazon
**Monitor** | [Asus VE248H 24.0" Monitor](http://pcpartpicker.com/part/asus-monitor-ve248h) | $164.99 @ Amazon
| | **Total**
| Prices include shipping, taxes, and discounts when available | $1315.08

What can I do to better this build since I am under budget. Is it good enough and does not need upgrading? Do I need a bigger SSD? I am planning to overclock and is my system ready for that? Is my graphics card's vram excessively high? Is it worth it to just get the R9 290?