Yeswanthpur pre-launch: Is early-bird real value?

Budget finalised, loan pre-approved — now stuck on which sector. Vaigaa Properties ka ek pre-launch project dekha hai Yeswanthpur mein, 3BHK around ₹1.2 Cr. Builder bol raha early bird discount hai, but honestly, I'm not sure if pre-launch pricing actually gives a real discount ya bas marketing hype hai. Koi experience share kar sakta hai? Also, construction-linked payment plan lein ya full down payment approach better rehta hai for investor ROI? Super area aur carpet area ka kya scene hai, builders inflate karte hain kya numbers? Kya dekhna chahiye while comparing?