Greater Noida investors: How did you leverage payment plans?

Just got possession of my 3BHK in Panchsheel Green last month, and honestly, the payment plan choices were a huge learning curve. Everyone pushes construction-linked, but I'm wondering if a higher down payment or spot discount could have worked better for my Tribeca Creators LLP unit. My ₹1.2 Cr flat in Noida Extension ended up closer to ₹1.4 Cr with stamp duty, registration, and all the PLC for a good view. Did anyone manage to negotiate a better total cost by leveraging the payment schedule or getting a significant spot discount in Greater Noida? Or is it just a myth now? Trying to figure out if I missed a trick to maximize ROI.