Installed the Graphics card and the SSD and it brought my 3 year old rig upto speed again.
I don't really feel the need to upgrade my 2500K CPU, Z68 motherboard and 16GB DDR3 RAM. Now, all I just need to get is another 4 TB HDD since I have run out of space.
Since the G1 series GTX970/980 are available in India now, for anybody who intends to go for these, please be mindful about the length of these cards. Its huge (32 cm) and its considerably longer than the MSI TwinFrozr II HD6950 that I had (which was itself a decently huge and heavy card). You would need a big chassis. Even in my HPTX case (Xigmatek Elysium), I had to remove a fan which I had previously arranged for blowing air in the GPU area, in order to accommodate this card. I don't think normal mid and even many full tower ATX cases would be able to take this card.