Sector 83: My negotiation struggle with Spes Construction

Been tracking Greater Noida projects for months now, especially around Sector 83. I work in real estate, but buying for myself is a whole different game, yaar. Spes Construction ke saath deal try ki, ₹78L ka 2BHK dikha rahe the. Matlab, kitna negotiate kar sakte hain? Builders toh 'no price drop' bolte hain. Aur pre-launch offers ka kya scene hai? Is it really a discount ya bas marketing hype? Possession ke time pe hidden charges (PLC, IFMS, parking) kitne extra lagte hain? My budget is tight around ₹80L. Koi genuine advice do.