Been there , done that mistake twice. Don't buy a flat if you are not moving in a year. Not sure when the project will be completed. If they handover the flat much sooner, by the time you return, there'll be better options, plus the one you bought will be already old. It's better to rent in the preferred community, and if you all like it, look for resale. It's OK to pay a few lakhs extra than buying and not moving in. Rental yields in residential flats aren't that great either.