Run it as is for mate - you will likely be OK - its just that for a few dollars more you could have picked up the g46 which is still poor quality but at least has vrm sinks,the gigabyte ds3p would have been the best buy for you in India.
The issue on the g43 isn't just the lack of sinks ,its that the caps themselves are poor poor quality - these things have actually been known to catch fire with 8 core chips.
Whatever you do dont ever use a tower style aftermarket cooler on that board as it will definitely throttle - the amd stock cooler at least pushes some air over the vrm area.
If you have spare money then this cooler
http://www.amazon.in/Deepcool-Gabriel-Cooler-Best-Cooling/dp/B00IR5U3W0
Will do a far far better job of cooling the CPU & vrm area than any crappy stick-on Aluminium or copper heatsinks - they are honestly a pretty worthless buy - airflow is key here.