get the jbj miniarctica...
its rated for higher just incase you want to upgrade.
it's a 1/15.. make sure you fill out the warraty card just in case.. mine never broke though I've used it for over a year..
the easy plumbing kit is a good idea too...
Trim the tubes as short as possible to minimize head loss on the pump... and make sure you upgrade the return pump on your tank and run the chiller between return and outflow.