Umang Winter Hills: Justifying the upgrade for ROI

Budget finalised, loan pre-approved, and I'm eyeing Umang Winter Hills. Currently in a 2BHK, thinking 3BHK investment. Owners, what's the actual capital appreciation been like since launch? And rental yield? Is the resale market liquid enough for a good exit in 5-7 years? Justifying the premium for a completed project for long-term ROI is key.