Ok so now I have all of this for 867$
Rosewill REDBONE U3 Black SECC Steel USB 3.0, eSATA, 3x 120mm Fans Mid Tower Computer Case
Western Digital WD Blue WD5000AAKX 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive - OEM
ASUS PCE-N10 PCI Express Wireless Adapter
CORSAIR Enthusiast Series TX650M 650W ATX12V v2.31 / EPS12V v2.92 80 PLUS BRONZE Certified Semi Modular High Performance ...
Rosewill RK-100 Black USB Standard Keyboard
AMD Phenom II X4 965 Black Edition Deneb 3.4GHz Socket AM3 125W Quad-Core Processor HDZ965FBGMBOX
ASUS DRW-24B1ST/BLK/B/AS Black SATA 24X DVD Burner - Bulk - OEM
Hanns-G HE247DPB Black 23.6" 5ms Widescreen LED Backlight LCD Monitor
MSI 970A-G43 AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX AMD Motherboard
G.SKILL NS Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-1600C11D-8GNS
HIS IceQ H787Q2G2M Radeon HD 7870 GHz Edition 2GB 256-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card
I'd like to know if I will have enough place for 2 7870 to crossfire and if there will be no ventilation problems otherwise I'll have to change the case.