Without knowing the gap between your german and english writing it is difficult to give an answer. Personally (I am bilingual), there is for me a threshold of

Without knowing the gap between your german and english writing it is difficult to give an answer. Personally (I am bilingual), there is for me a threshold of grammar and syntax accuracy below which an article looses credibility. What I would do if I were you is write in German and publish and then translate in english the articles with best reception (visits, number of comments...). Translation can be done by you directly with some support from google translate (if your syntax and grammar in english is decent, you will be able to spot and correct the worst bits of the Google output). Or it can be even done by a professional if this is sustainable economically (I hear that cost per word is quite low these days). This approach has the bonus that you will structure your storyline and syntax in your mother-tongue: this will generally be much better than a first version written in a language you don't master. Also, while english will give you a larger audience, it also gives you a larger competition.