1. Skipping CD's
Common problem, try taking your cds out at night, this normally helps, something to do with the mosture in the air so im told !
2. Handbrake adjustment (doesn't hold car on hills)
You can adjust it yourself, pretty simple!, How bad is it ?
3. Rear Gas Struts (can't hold weight)
As you have a spoiler, another common problem, you can either remove the weight in the boot lid, or buy up-rated gas struts, ESR do these !
Hope this helps