Not again....
Possible alternative.
Might be easier (cheaper?) than putting the 62" prop on.
Welcome to MT-Propeller
Their main headquarters is on your side of the pond and EASA friendly.
I helped several people install these props for similar reasons and haven't heard anything negative.
Worth an email or call. Might be able to help get around the full fairing issue to get your speed??
Good luck!
W1