Under-construction deal, Gurugram – am I missing something?

Under-construction projects in Gurugram feel like a big gamble sometimes. I'm checking out GLS Infra in Sector 83, but it's under-construction. Site visit pe kya kya dekhoon, aur delivery risk kaise assess karoon? Builder ka previous track record kaise pata chale? Koi specific questions jo first-time buyer ko puchne chahiye? Thoda nervous hoon yaar.