New Ford Mondeo owner questions

[gordito]

I got a Ford Mondeo 2012 auto LX MC for real cheap, in a very good, almost brand new condition (at least outside)

I'm want your help for these matters

1) I want to replace the awful stock stereo system. Should i look for models that fit Mondeo or i can do with a generic 2 din one and a facia? Anyone knows some good workshop to do the work for me here in WA?

2) Any good indie mechanic for service and inspection around Perth? This model has the 'simple' automatic transmission, what kind of service does that want?

3) Any way to replace the steel rims with factory alloy ones?

Thank you