New Intel build for running Photoshop cc 2014 and Lightroom cc, £2000 budget

Right, basically the pc i currently have wont run certain aspects of photoshop and i have no idea why.
my current system is:
CPU AMD Piledriver FX 6300
Motherboard Gigabyte 970A-DS3P
GPU Sapphire radeon R9 270x 2gb
RAM 2 x 4gb Crucial Ballistix in dual channel
HDDs crucial M500 120gb running OS and programs
HDD 2 Seagate 1tb SATA 3 running my games
HDD 3 Seagate 2tb SATA 3 running photos
HDD 4 Seagate 160gb 2.5 sata clone of ssd incase anything goes wrong
OS Windows 8.1 pro



Basically i have tried fault finding to fix the issue and i cant find any fixes, ive uninstalled the program and reinstalled it 4 times now, ive contacted adobe and even posted for help on there forums, no one has an answer.

ive got so fed up with it that im going to build a new Intel pc just for photoshop cc 2014 and lightroom cc, it will be used to edit clients photos before they recieve them.
Any recommendations? ive got a budget of between £1500 and £2000 could push it to £2500 if needed.
Cheers
Adam

The budget is also including things like Mouse and keyboard, A good monitor for photo editing and items like blu ray rw, its a complete new build so will need everything for it

This is what ive got so far but unsure if the case will work with the H105 water cooler and also if there is anything else that might improve the performance

YOUR BASKET
1 x EPIC BUNDLE: Intel 4790K, Gigabyte Z97X-Gaming 7, Kingston 16GB 2400MHz Kit, Superflower 750W PSU & FREE STUFF!! **£50 SAVING** £561.97
1 x Asus GeForce GTX 780Ti DirectCU II 3072MB GDDR5 PCI-Express Graphics Card £449.99
1 x Samsung U28D590 28" 4K 60Hz 1ms Gaming Widescreen LED Monitor - Black **OcUK Exclusive** £429.95
1 x Kingston HyperX 16GB (2x8GB) PC3-19200C11 2400MHz Dual Channel Kit - Black/Red (HX24C11BRK2/16-OC) £139.99
1 x Microsoft Windows 7 Professional SP1 64-Bit - OEM (FQC-08289) £116.99
1 x Samsung 250GB SSD 840 EVO SATA 6Gb/s Basic - (MZ-7TE250BW) £99.95
1 x Corsair Hydro H105 Extreme Performance Liquid CPU Cooler (CW-9060016-WW ) £89.99
1 x Cooler Master Silencio 452 - USB 3.0 ATX Case - SD Card Reader £64.99
1 x LG BH16NS40 16x SATA Internal BDRW - OEM £62.95
2 x Seagate Barracuda 2TB 7200RPM SATA 6Gb/s 64MB Cache - OEM (ST2000DM001) HDD £56.99 (£113.98)
2 x TP-Link AV600 Gigabit Powerline Adapter Starter Kit (TL-PA6010KIT) £36.95 (£73.90)
1 x Zalman ZM-K400G Gaming Keyboard £19.99
1 x Zalman ZM-M401R Optical Gaming Mouse £14.99
1 x Arctic Silver 5 Thermal Compound (3.5g) £8.99
1 x Ozone Ground Level Small Gaming Surface £7.14
1 x OcUK Professional 3m Flat HDMI High Speed with Ethernet Cable (CDLHD-003) £6.98
4 x Akasa AK-CBSA05-30BK Super slim SATA rev 3.0 data cable with securing latches - 30cm, Black £3.29 (£13.16)
Total : £2,275.88 (includes shipping : ).

I'd go with a 4790k, an asrock z97 extreme 4 or 6.
I would add 2x4gb ram or go for 2x8gb.
GPU is fine, as PS uses open cl. No need for a nvidia GPU.

A bigger SSD would not hurt (500GB to store the pics you work with).

It will cost you around £600/700 minus the what you can sell the fx/mobo/ram combo.

Edit: sorry I didn't read the post very well... complete new build...
Same as mentionned earlier plus:
600w corsair cx 600m psu.
2x8GB of 1866/cl9 memory.
AMD 280x or nvidia gtx770 gpu.
Storage is up to what you need space wise.

That's £300 more.

Don't know about the monitor but I'd go with a couple of 1080p or 1440p.