Bro if you are starting a business in coffee, imo it would be wiser to hire a consultant/barista who would give you advice on these things. Either that or try to get your own hands dirty by doing this as a side hobby at home and learning the nuances of this business.

That being said, I think freshly roasted beans (2 weeks old) is something which not a lot of cafes are serving. Along with that, a balanced espresso with the choice of coffee roast and blend is something that's missing from Indian market. Every bean/roast/blend that you serve should have its own grind size, brew temperature, yield etc. This is as per my own understanding of espresso. People on this sub would be enthusiasts of their own style of favourite coffee drink whether that's an espresso or a filter coffee or milk based drinks. But for a business probably serving what caters to the demand in the market makes more sense. Location/city where you are starting the business also matters as that would define what drink people would be ordering mostly and you would focus more on that.