A 9300 is very outdated (though still 2 generations ahead of what I have). I don't know what 6000 rupees are in USD, however, the one thing that I'm seeing that will cause big problems is your PSU. You practically won't be getting any upgrade with just 180 watts. You'll almost certainly have to upgrade your PSU before you can upgrade your video card to anything halfway decent. The CPU is a bit weak as well, though it shouldn't be too much of a problem. The PSU is the first thing you should upgrade.
Edit: then again, you might consider buying (or building) a new budget computer.