Take a close look at the Goodyear tires. They may have good tread depth in the center, but how are the shoulder areas? These tires on this car often had accelerated shoulder tread wear, and if so, you may not have as much life left as you think.
If it were my car, I would seriously consider replacing the 2 Goodyear tires with something different. This will give you 4 tires that are all new or nearly new so they will wear out together as they should (if you rotate them). It will also make you safer from getting a blowout, which the OEM tires were too likely to have (along with some other possible issues like sidewall cracking). Ideally you would want all 4 to be the same model of tire, which you could do if you choose the matching ones. Or get whatever tire you prefer. I don't think I would lose any sleep over them being a different model as long as they are the same class of tire. I don't think it makes sense to throw away the new BFGoodrich tires.
The only thing good about the OEM tires is that they are very efficient. You can get tires that are more reliable, have better handling and traction, and are quieter if you are willing to give up a few miles of electric range.