I made some changes
[PCPartPicker part list](
http://pcpartpicker.com/p/tQH4ZL) / [Price breakdown by merchant](
http://pcpartpicker.com/p/tQH4ZL/by_merchant/)
Type|Item|Price
:----|:----|:----
**CPU** | [Intel Core i3-4130 3.4GHz Dual-Core Processor](
http://pcpartpicker.com/part/intel-cpu-bx80646i34130) | $119.99 @ Amazon
**Motherboard** | [ASRock Z97 PRO3 ATX LGA1150 Motherboard](
http://pcpartpicker.com/part/asrock-motherboard-z97pro3) |-
**Memory** | [G.Skill Ares Series 8GB (2 x 4GB) DDR3-1600 Memory](
http://pcpartpicker.com/part/gskill-memory-f31600c9d8gab) | $88.90 @ Amazon
**Storage** | [Samsung 840 EVO 250GB 2.5" Solid State Drive](
http://pcpartpicker.com/part/samsung-internal-hard-drive-mz7te250bw) | $129.97 @ Amazon
**Storage** | [Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive](
http://pcpartpicker.com/part/seagate-internal-hard-drive-st310005n1a1asrk) | $61.99 @ Amazon
**Case** | [Corsair 300R ATX Mid Tower Case](
http://pcpartpicker.com/part/corsair-case-300r) | $85.59 @ Amazon
**Power Supply** | [Corsair Builder 430W 80+ Bronze Certified ATX Power Supply](
http://pcpartpicker.com/part/corsair-power-supply-cx430) | $39.99 @ Amazon
| | **Total**
| Prices include shipping, taxes, and discounts when available | $526.43
| Generated by PCPartPicker 2014-08-12 17:54 EDT-0400 |
The change you made makes a sense, i should have suggested almost the same.
Regarding you other questions:
1. i3 has in theory half the power of the i5 but the question is would you need i5 in the first place. I have the exact cpu on an Z87 mobo and i run like 4-5 operating systems included windows server and linux and i dont have performance issues. The i3 is pushed hard but it handles everything i throw at him. The bright side is that you can always switch it with i5/i7 later if you need it.
2. Hard drives do have colours. Green disks spin at 5400-6000 rpms, have higher latencies and suck in performance generally speaking and are used for storage an external drives in closed enclosures, heats up less. Reds are like the greens but optimized for NAS systems. Blues suck donkey ballz lately and dropping like flies (Western Digitals) and have no significant performance benefits, somewhere in between the greens and blacks. Blacks are the best, they spin at 7200 rpms, have lower latencies, great performance (as far as HARD drives are concerned, which is way below SSD performance but they are used for storage anyways), great reliability and a 5 year warranty. These apply to Western Digital. Other manufacturers are somewhere in between, but you hacve an SSD for performance and a HDD for storage so it doesn't mane any difference to you. Pay attention to warranty.
3. HD4400 and HD4600 are the graphic chips and they dont differ significantly. It soesn't make any difference to your scenario.
4. SSD terms also are strictly technical and are trivial to non technical user, so skip them whatsoever. The Samsung EVO is a great choice. There is also Samsung PRO which is slightly faster but insignificantly.
5. I have forgotten how an optical drive looks like lately since all installations can be made with an USB stick and you wouldn't need it for that reason. That is unless you don't have some data written on an optical storage and you need to access it. It's up to you.
6. I would suggest addin 4 x 4Gb or 2 x 8Gb of RAM so that you spare your ssd from paging data (making unnecessary writes) which shortens it's life span, and you may need the extra RAM depending how many machines you plan on virtualizing.
If you have more questions shoot.