Use of dash and punctuation

In the first sentence of this paragraph, is a dash the correct piece of punctuation to use or would a comma be more appropriate?

I was also wondering, is it necessary to say coming-of-age genre, or would genre on its own work fine?

Thanks in advance!

In summary, Dickens’ use of a sophisticated plot and characterisation coupled with his exploration a number of timeless issues are just some of the factors which make Great Expectations worth reading – there are simply too many to mention. It is a novel which, without giving too much away, stands out in its coming-of-age genre because of the important lessons which Pip learns on his journey from childhood to adulthood. Great Expectations is ultimately a complex novel which kept me compelled from the outset, and it is because of this that it is essential reading.