Noida holding period: Beyond just price appreciation

Sector 150 mein 3BHK dekh raha hu, ₹1.8Cr tak. Jewar Airport aur FNG Expressway se kaafi impact hoga, log keh rahe hain. Investment ke liye, kitne saal hold karna chahiye maximum gain ke liye? Meri family long-term bol rahi, but I'm not sure if prices 5-10% p.a. badhte rahenge. Liquidity ka bhi sochna hai.