Great! Steem has a lot of potential in India, it's the second largest population of English speakers. You're making the right move, this could end up being a very successful venture in the long term.
I would say stick to the basics. Open up a simple exchange, link bank accounts with IMPS and we'll see where that takes us. I'd like to see exchanges link Steem accounts directly (using Steemconnect?), instead of using the clumsy memo system. Of course, there should be that for people who don't want to give out their active key etc.
I'd suggest getting in touch with Steemit Inc - I'm sure they'll offer you all the support you need.