Axel,
We have a wealth of information regarding dynamics processors in the design notes section of our website.
THAT Corporation Design Notes
John is probably right that the 4301 is overkill for a "lo-fi" application, but for a one-off design, why not go for broke!
By the way--if you're looking to order just one or two parts, Mouser would be your best option.
Good luck!
-Tim