Go ahead with it.
if you have the time, would suggest to do maintenance yourself.
Do not rely on mechanics.
Infact would suggest to take out time, and looks after the car yourself
There is plenty of DIY support, archived on the forums here, on Pakwheels.
Can start with basics, as air filter replacement, oil replacement, and other periodic scheduled items.
With time you can build up your tools.
Would be amazed to see, how much you can save on maintenance costs, this way.
In the mentioned budget, the car would be few years old. Hence car would need regular look after. However the good part is, Mehran has all parts available at reasonable prices.
Good Luck