I think best and safe investment is in Pakistan Housing Society Phase III Now (Gulberg) Islamabad.you can buy a plot 30X60 in it. this is not a private society it is under intelligence burearu. Call for more details (+92-301-6756975) Sarfraz
The best choice for you under the circumstances would be to buy a kanal (500 sq yds ) plot in the Ministry of Commerce Housing Scheme located next to airforce housing scheme on main Fateh Jang Road off Turnol. Files of kanal plots are available well within your range and once the property shoots up, you can easily dispose off this file and make a handsome profit in the process. For more info, you may contact me on +92 333 5144479 ( SOHAIL )