What other advantages and disadvantages?
5 or 4 paragraphs?
Well, if you have a question that you don't like at all, then you can write with a 5-paragraph essay. You write one introduction, three bodies, and one conclusion. This can help you write more words, but some students, that I see, put grandiose ideas, by writing too many words. Uppsss.., remember, 40 minutes to finish your essay are a must :D
Look at what Dumi suggests you with the structure (a 4-paragraph essay). With this structure, you are easy to develop your paragraph properly, one content paragraph for advantages, and one for disadvantages. This is good for coherence and cohesion between the sentence-to-paragraph-to-essay construction, and for which in the five-paragraph structure this is weak.