Selling bada ghar, Noida mein flat lena hai!

Kids have moved out, so don't need such a big place anymore. I'm looking at Unnati The Aranya Phase 1, since it's ready to move. But resale price thoda zyada lag raha hai. Someone suggested RPS01 RRPS01 And RRPS02 YEIDA. Cheaper hai, but under construction ka risk hai. Is it worth saving money and waiting? Yaar, maintenance charges mein bhi farak hoga, right? Which one would be better for a senior citizen?