Buying plot in undeveloped CDA sectors

My budget is rs 4 million and i am planning to buy a plot in undeveloped CDA sectors maturing in next 4-5 years. I have been looking at prices on Zameen.com. I have noticed 5,6 and even 4 marla plots being sold. What I wanted to check is the possibility of buying 4,5 or 6 marla plots adjacent to each other. To make it more clear, for instance, buying two 6 marla plots next to each other once plotting is done by CDA? If yes then i presume it is also possible to have 12 marla plots being constructed (instead of 6 marla each) unless against CDA policies.

By the way, happy new year to everyone. :)

Thanks and regards.

You can buy two or more plots in CDA sectors in 4 million budget like i-14 to i-16 and you can see plots nos before you buy.