Ich bien ein Deutche/Amerikaner. My advise to you would be that the job back in Germany would be a distraction. You need to finish your college diploma first and foremost. Taking a comfortable job like this one, at your age, will only move you farther away from your dream. In my honest and respectful opinion, if you are considering taking a job that will move you farther away from becomeing a professional pilot, then maybe you aren't as passionate about being a professional pilot as you think you are. I was offered a great job by a friend of mine where I would have made $100,000+ a year. I told him respectfully no. Why? Because I knew it would have meant the end of my dream. Aint no WAY I would have wanted to demote myself down to $22,000 my first year as a professional pilot.
Success can frequently be a greater enemy than failure.