I want to use the word since as because, but I don't know if I can add the word 'then' after it. For example, is the sentence 'since we have A and B, then there is no need for you to get C' correct? Is the word redundant in this case?
And I would like to say 'since A, and B, blablabla.. In this case A, and B are two reasons, should I add then before blablabla to make it more readable? or is this wrong