Is investment in dhai overseas block a good option?What size of plot ,for how long , wat is expected timefrmae and return?
Overseas is going take the most time to develop. People also suffered because Rupee strengthened over time. At $3000 loss it's still not a viable option, I think.
If you think you will have a steady supply of more money on near future, go for a BT Karachi. You'll spend 5 lacs to get a file now and 90K every quarterly installment. It may not give you good returns (which seems unlikely) but sure won't give you such a huge loss.
This above is an opinion.