Hi Kate,
I suppose the only people who would be best qualified to give you an accurate answer is your clinic doctors. Sperm quality is definitely important for fertilisation and embryo development. And with the high cost of DE, it would be an awful price to pay if the sperm quality was not good enough and the cycle was wasted 😕
Would it be worth doing more tests on the sperm to get current readings?
Wishing you lots of luck with whatever you decide 🙂