First time buying a brand new car

Hello everyone. Going to be posting my experiences with you all on my first brand new car buying journey.

Car I want: Mazda CX5 S

Hoping to qualify for the 0 APR for 36 months.

Autoexpress Mazda of Erie CX-5 list price: $31710

Hoping to negotiate 8-12% off.

Trade in: 2018 Chrysler 300 Touring AWD

Autoexpress Mazda of Erie valued it $7500-8500

2500 cash on top.

Hoping to get a price between $28000-$28750

Are my expectations to high? What do you all think?