Bahria nasheman lahore

I am about to buy a plot in bahria nasheman 5 marla...
Any suggestions as its an ok time to buy the plot there ? Means will it be increase in future or its better to make a home on it in future like 1 year or 2 year later...If anyone knows current rate also inform me that what should be the price for 5 marla in zinia, iris and sunflower blocks..
Kindly guide.