Upgrade Current Build/$3000 Budget

I currently have a rig i am looking to upgrade.
CPU: 2500k
MOBO: P67-G43 Gigabyte
GPU: 2*GTX 280's
RAMM:8Gig
PSU: Corsair HX850
CASE: RAVEN 02
HDD: 2 1TB Caviar Black WD's

I am wondering where to go from here. On one hand i would like to have an extra computer for the office, while having a completely gaming dedicated rig. The biggest thing i know i need is a new GPU for my current build as one of the 280's has died on me quite recently. I am also looking to include an SSD in both computers along with buying another 1TB for the gaming computer for storage. Any help would be appreciated