Can I "easily" get all this from a wrecker?

[HKX]

I've got an 06 X5 3.0i, love it, but it needs a few new bits. Buying OEM is too expensive for the value of the car so thinking about going the wreckers route and repainting if need be (I know a guy in a paint shop so that should be cheaper than normal).

I need these bits:
- replacement wing mirrors (both)
- replacement rear spoiler
- replacement door handle (although if too hard, the internal mechanism is pretty cheap online)

I also want to give it the 4.8i look, so also wanting to pick up:
- front bumper
- rear bumper
- rear exhaust tip (I think these are probably welded on, if so then will buy this OEM or somewhere else)
- rear wheel flare arches
- might be missing something else here to complete the look...

I'd like the 20" wheels but not sure if they'll be at the wreckers... may have to scout online for 2nd hand here.

If I brought my tool kit and had a couple of hours to spare, realistically which of these could I take from a wrecker car? Or would there be parts that I would need to buy separately?

Thanks!