Partner and Bikaç Question

I just registered in the forum. I wanted to make use of returning very useful information. We have 2004 Peugeot Partner. We just bought it. I have a few questions about the vehicle. I'll be pleased if you pay attention.

1.The CD Player of the Vehicle sometimes does not give CDs. It plays, switches to the radio, but does not give the CD when I want it. What is the problem? Is there a need to change the solution?

2.The piece of fabric that divides the trunk of the car in two. It was a hard plasticish thing in our previous car. I want something like, where can I find it, is there an original, what do you suggest?

3.I want to buy a car seat. The originals are more than 100 lira. This is more than I can pay. Will a armrest, which is 30cm in length, 11cm in width, 36cm in height without wearing feet, and 36cm when attached to the partner? Does it prevent the parking brake?

4. I wanted to buy an adventurer. Can we put the net on the sides like in Adventure? I would like to have regular tools and tools :)

5.There is no steel rim on the vehicle. How much will it cost if I do? What can you suggest going out?

6.Last :) I want to get navigation. What would you suggest something that wouldn't be too expensive?

Thanks in advance.