Okay, I am going to try getting a Yackie SIM with $49 of airtime for $49. I will still get the Ortel for outgoing calls to the US from Germany. I'll just have to swap them when I need to make a call. I will get a phone number in my city from Yackie and forward my local phones to it. Does this make the best sense?

Well, I ordered the Yackie card, but it turns out Ortel stopped taking credit cards and only does bank transfers, on top of charging 8 euros shipping for the card, so I did not get it. New question: what is the best card for making outgoing calls from Germany to the US?

I think Maxroam. You spend 0,32 eurocent to call landline or cellular usa