You will need to run an amp for those, it would be easier to get a line output converter with channel summing. I got a set of universal speaker pods to put my own speakers in, and spent less than $175 for the pods and speakers.
I am a dealer and I see a lot of Ecoboost Mustangs with less than 100k miles in the inop lanes due to engine problems. It seems like the the 2.7 is going the way of the IMS bearings in the Porsche 996s, which is overhyped by internet forums.
The offset may not work. Most people are running an offset closer to 0 with no lift. Customwheeloffset.com and search the gallery for what you are trying to do. https://www.customwheeloffset.com/wheel-offset-gallery?make=Ford&model=Bronco&sort=date&year=2021&page=1