Gurugram investment from afar: Pre-launch and payment plan dilemma

Sector 57 keeps coming up every time I shortlist something for investment. I'm based in Dubai, so can't really do site visits. Tribeca Creators LLP ka pre-launch offers kitne genuine hote hain? Is it actually a discount ya bas marketing hype? Also, construction-linked payment plans versus more upfront down payment – which one makes more sense for ROI? Worried about future delays and my investment getting stuck. Kya koi real deal value nikaal paya hai aise plans mein?