Anant Raj Estate: Worth the upgrade premium?

My 2BHK in Sector 57 is feeling small, so eyeing Anant Raj The Estate Residences. ₹7.5 Cr for a 3BHK is a huge premium. Anant Raj ka delivery track record kaisa hai for this project? Don't want delays like some other builders. Also, iska resale market kitna liquid hai? Will I find buyers easily in 5-7 years if needed? What's the real capital appreciation potential post-possession? Is this price jump worth it for long-term wealth?