Apna Ghar Sunehra Apartment

Been looking for a Mohali flat since months now. I'm in real estate but buying for myself is totally different. Vohra Estate 13 is ready, but what's the actual total cost of ownership after stamp duty and interiors? Apna Ghar Sunehra Apartment ka status 'null' dikha raha hai. Builder ka track record kaisa hai for timely possession? Not sure if the risk of under-construction is worth it for potential savings. Koi insight de sakta hai?