Uncovering real value in Greater Noida pre-launch deals

Since last year I've been seriously looking into Greater Noida for an investment property. I'm based in Dubai, so getting ground truth is tough, relying heavily on brokers and community insights. Specifically, I'm eyeing areas like Sector 56, maybe something from Shree Brahma Infraheights, but open to suggestions near the Jewar airport corridor too. My main dilemma is pre-launch pricing. Is it genuinely a discount or just hype? Are the 'early bird' deals actually better than waiting for projects to be closer to possession? Also, for an investor, what's a smarter payment structure: construction-linked plans or pushing for a lower per sqft rate with a higher upfront payment? My broker here is pushing CLP but I'm trying to maximize deal value. Any insights on negotiating these points without being there myself?