Also loved your setup man, Was really inspired after watching your video on Youtube

))
When I started off with the journey, I had a very limited budget. But with time I understood what how each speaker sounds different, each have their merits and demerits.
For most people getting minimum 5 channel setup is a must from go, but it can get messy.
Don't get me wrong, Tagas are no slouch. They are extremely competent but the better quality speakers you invest in will give you better results too. The difference won't be night and day within the budget but definitely one can feel hear it.
But all this comes down to how much one can invest in one go. Its quality vs quantity, you won't need to change speakers for a long time. So would suggest listen to the speakers and go for the one you like.
Under a lakh this is a good setup, better than the polk package. Subwoofer is a heart of Hometheatre, get a subwoofer which will compliment the speakers and depth. I have seen people buy great speakers but get 8 inch small subs, and those speakers produce better bass than the sub.
Take your time and read on things, this is a expensive hobby and trust me, even I am getting just started.