1) Replace the bulb in the light, it'll cost you around 200 rupees.
2) A new rear light shouldn't cost you more than 2000.
3) I have a Prosmatic too, and I have the same problem. I got it checked, and I think it's gonna cost quite a bit, which is why we never got it fixed. Most automatic cars have handbrakes that don't work too well. Atleast the ones that I've seen!
4) Around a 1000 for denting and alignment of the door etc. It may cost you more if the fender needs to be repainted.
5) I'm not too sure about how well the scratch removing polishes work, but the denting will cost you another 1000 I'd say.
6) Trunk either needs alignment, or the trunk lock needs replacement. Either way, not more than 1000 I'd say.
7) I'm pretty sure the bumpers CAN be repaired further if repaired by a professional. But then again, I can't be too sure without seeing the pictures. Each bumper should cost you around 6-7k including fitting and paint in Karachi.
8) Does your car have CNG? You might need to raise your car with new springs, or it might be a problem of the silencer/suspension alignment only which won't cost you much either.
If you get all the work done from a single shop, I think you can get it all done for less than 25000.