I took Spanish through middle school.
I have taken Chinese all four years of high school.
I have taken German junior and senior year.
I would definitely take Chinese again. Do NOT let people scare you about the language. Yes, the characters are significantly harder than 26-35 letters. But, there is little grammar and 0 conjugation; 2 things that are very difficult in German for me that Chinese has made easy. Zhongwen is a long term goal. To even become conversational takes a few years. Keep that in mind, but I'd say definitely try it out.