Advice request for a Second Gaming Machine

Hello DS Friends. I am planning to gift my current DS Rig to my son after my next DS purchase and although I was thinking end-of-year, I am considering buying something like the config below now instead, swapping out the graphics card with my 780ti Classified and using my 512 SSD. I would then plan to upgrade the 780 at some point. I am currently gaming at 3440x1440 with good results and expect my current card is almost as good as any single GPU card right now.

So here are my questions:
1 - overall impressions or any suggestions for tweaks?
2 - will I be able to adjust my individual fan speeds with the included software, say to ensure positive pressure?
3 - are there any upgrades, including soon-to-be-released hardware that would give me better longevity or reliability?
4 - for DS, when is the next planned sale for price/warranty extension? (black Friday is a long way off


Budget:
<$3K, but really just looking for good value.

Expectations:
Gaming at 3440x1440

Usage:
FPS and Open World Gaming, FC4, Metro Last Light, Dying Light, COD...

Special Needs:
Reliability & Longevity - Able to use as multimedia PC - Ready for 4K Gaming with Vid Card Upgrade

Saved Ticket #: [Please Type Here]

Specifications:
Configuration Code: 1146599
Total Price with Instant Savings: $2,489.00

Direct Load URL: https://www.digitalstormonline.com/configurator.asp?id=1146599

Specifications:

Chassis Model: Special Deal Hot Seller - Corsair Carbide Series Air 540
Exterior Finish: - Standard Factory Finish
Trim Accents: - Standard Factory Finish
Processor: Intel Core i7 4790K 4.0 GHz (Codename Devils Canyon) (Unlocked CPU) (Quad Core)
Motherboard: ASUS SABERTOOTH Z97 MARK2 (Intel Z97 Chipset) (Military-Grade TUF Components)
System Memory: 16GB DDR3 1866MHz Corsair Dominator Platinum DHX (Extreme-Performance)
Power Supply: 750W EVGA SuperNOVA
Expansion Bay: - No Thanks
Optical Drive: ASUS Blu-Ray Player/DVD Writer (Play Blu-Ray and Burn DVDs) (Model: BC-12B1ST)
Storage Set 1: 1x SSD (256GB Samsung 850 PRO)
Storage Set 2: - No Thanks
Storage Set 3: - No Thanks
RAID Config: - No Thanks
RAID Card: - No Thanks
Internet Access: High Speed Network Port (Supports High-Speed Cable / DSL / Network Connections)
Graphics Card(s): 1x NVIDIA GeForce GTX 970 4GB (EVGA ACX Cooler Edition)
Sound Card: Integrated Motherboard Audio
HPC Processor: - No Thanks
Extreme Cooling: H20: Stage 2: Corsair H110 280mm Radiator Liquid CPU Cooler (Extreme-Performance Edition)
H20 Tube Color:- Not Applicable, I do not have a FrostChill or Sub-Zero LCS Cooling System Selected
Chassis Fans: Standard Factory Chassis Fans
Internal Lighting: Digital Storm RGB LED Lighting System (Requires Thermal Management Control Board & Software)
Airflow Control: Digital Storm Thermal Management Control Board & Software
Chassis Mods: - No Thanks
Noise Reduction: - No Thanks
LaserMark: - No Thanks
Boost Processor: Stage 1: Overclock CPU 4.0GHz to 4.4GHz
Boost Graphics Card(s): - No Thanks, Please do not overclock my video card(s)
Boost Memory: - No Thanks, Please do not overclock my memory
Boost OS: - No Thanks, Please do not tweak the services on the operating system
Windows OS: Microsoft Windows 8.1 (64-Bit Edition)
Recovery Tools: Windows Recovery Toolkit (Bundled with Windows CD)
Virus Protection: FREE: McAfee AntiVirus Plus (1 Year Service Activation Card) (Not Pre-installed) ($35 Value)
Office: - No Thanks
Game: - No Thanks
Display: - No Thanks
Surge Shield: - No Thanks
Speakers: - No Thanks
Keyboard: - No Thanks
Mouse: - No Thanks
Portable Gaming: - No Thanks
Branded Gear: - No Thanks
Priority Build: - No Thanks, Ship Within 10-15 Business Days After Order Is Successfully Processed
Warranty: Life-time Expert Care with 3 Year Limited Warranty (3 Year Labor & 1 Year Part Replacement)

Edited by Gnicky - 11 Feb 2015 at 6:01pm

My ASUS mobo, has something called Fan Expert, that can control fans to some extent.

Only one drive, and a 256 only?

Are you adding your own drive(s)?