Mota Mava 2BHK: NRI payment plan concerns

Visited a few sites virtually last week, including some Balaji Group projects near Mota Mava. Builders mostly push construction-linked plans. As someone in Dubai, project delays ka risk zyada lagta hai, no? All-in cost mein kitna extra aata hai after base price? PLC, parking, maintenance deposits, yeh sab negotiable hota hai kya? Rajkot mein koi experience hai iska, especially for a 2BHK around 60-70L?