when your trying to get performance don't scrimp on price
(easy to say went it is not your money). You can have bigger distances with the fibre than the cat5 so could use this to get your switch nice and close for the cat5 side of things.
I didn't know that cat5e had such a short max length I'd have thought you could go the same distance as standard cat5 after all that length is due to the drop off in signal not the throughout of data????