I wasn't able to post with my full parts list. Here's the list:
ASUS MAXIMUS VII HERO LGA 1150 Intel Z97 ATX N82E16813132125
Intel Core i7-4790K 4.0GHz LGA 1150 Boxed Processor SKU: 302273
Thermaltake NiC C4 (CLP0607) 120mm CPU Cooler N82E16835106215
DRAM 2 Each Team Xtreme TXD316G2400HC10QDC01 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 2400 (PC3 19200) for 32GB total N82E16820313325
2 Each SAMSUNG 840 EVO MZ-7TE250BW 2.5" 250GB SATA 6Gb/s N82E16820147248
Hitachi Ultrastar 7K3000 HUA723020ALA640 2TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Enterprisel Hard Drive Bare Drive 9SIA5AD1P08389
EVGA 02G-P4-3753-KR G-SYNC Support GeForce GTX 750 Ti Superclocked 2GB 128-Bit GDDR5 PCI Express 3.0 Cooler Master V750 Compact 750W 80 PLUS Gold PSU N82E16817171094
Microsoft Windows 7 Professional SP1 64-bit - OEM N82E16832416804
NEC MultiSync PA242W-BK-SV 1920 x 1200 Adorama SKU NCPA242WBKSV
Logitech Marbel Mouse USB Optical mouse PS2/USB
Rosewill RK-9000 Cherry MX Switch (blue) Mechanical Keyboard
Wacom Intuos 3 Model PTZ-431W
Just answered that very question a few days ago. This should help guide you.
Thanks very much. I will visit those resources and give them a good study.
GTX 970 has a lot of power for low $300.
Thanks! I believe I'll settle on a EVGA SuperClocked 02G-P4-2765-KR G-SYNC Support GeForce GTX 760 2GB 256-bit GDDR5 PCI Express 3.0 SLI Support w/ EVGA ACX Cooler Video Card, N82E16814130932 at $194.99
Since you have a PA242 you might want to consider a 10-bit capable card. That's what I'd do if I was going to get a new card today.
AFAIK that still means a Nvidia card in the Quadro line, or an AMD card in the FirePro line. GeForces and Radeons don't qualify. There were rumors that the high-end Radeons were getting 10 bit support, but I believe it didn't materialize.
I haven't researched this lately, but prices should start in the neighborhood of $200-250.