Upgrade path for my PC

I built my machine in mar 2012, it has the following specs.



Asus p8z68 v-pro gen 3

i7 2600k

Ati radeon 7970 x 2 crossfire

Corsair H100

Corsair vengeance 4x4GB

Corsair AX1200i

Corsair force 3 gt 120 GB ssd

WD caviar green 2TB

Thermaltake level 10GT case



I am looking for a suitable upgrade timeline for this config .

What I have in mind is :

1. Adding an SSD now (Samsung 850 evo 250 GB)

2. Upgrading the GPU next year.

3. Upgrading the CPU/MoBo/Ram after 3 years.



Please give your suggestions and comments. Thanks.

Upgrade path for my PC