85 Inch or 98 Inch (or 100 Inch) TV Recommendation

My viewing distance is 13.5 feet. I am confused whether to go for 85 inch or 98 inch / 100 inch TV. I want a Google TV specifically (ability to side load apps) and not Vida OS or anything else that would restrict side loading. Of course, I can use Fire Stick or ONN Google TV box (from USA) later on if you think quality of a non Google OS would surpass Google OS within the same price bracket. For 85 inch, the sweet spot is INR 1,30,000 but 98 inches is more than double in price at INR 2,50,000 so I am unsure if it is even worth it. I am upgrading from 50 inches (been watching it since last 10 years). I am in Gurugram so does it make sense to buy offline or online? If offline, which store? It'd be good to have two or three years of warranty for peace of mind.