Fan controller will be fine assuming it's powerful enough (probably is). Don't run a pump off the mobo header it can burn it out. Make sure you run enough voltage for the pump to start though
I looked at this myself and 10mm should be fine, 15 if you want to be safe.
http://www.performance-pcs.com/catalog/index.php?main_page=product_info&cPath=59_346_393_616&products_id=29800