Rear camera + Bluetooth + GPS

When I bought my new car, I saw the bluetooth on the steering wheel, but when it arrived I found out the bluetooth is not avaible in brazilian version. Reading here the forum, probably because we don't have the OnStar service here.

Also, during my negociation I asked for a park sensor, but the product they offered me was awful and certainly non-original.. so here I'm with no BT and no sensors to park.

This make me think to buy a GPS+BT, but the rear sensor/camera problem would be still a problem.

I found a mirror on YT with GPS, rear camera and BT... but it was so... "China" I was afraid even to considere it.

Do you guys have an opinion about it, if there is a reliable product like this or better forget it and buy only buy the GPS with BT?

Tks a lot!