The sentence should clearly be understood as a continuation of what the person requesting the translation said first (in the comment field): "dette er min første tekst til oversættelse. Jeg vil derfor i første omgang teste af, hvordan det virker", so in the light of this information, I suggest the following translation: "Thereupon, I expect to make use of this service on a regular basis." The Danish original doesn´t say anything about "soon" and the word "dernæst" has not been translated in the English version (by Bhatarsaigh)