Get the Go kit. They are high quality and contain all the parts you need for an overhaul. They are pretty much what most people in the industry use for pump repairs, IMHO. Some of the Go kits are designed for more than one pump model or for different revisions of the same pump so there might be some extra parts (usually o-rings) in the kit that might not be needed.

Main advice is not to touch the ceramic seal surface with your fingers (skin oil can ruin them) and make sure yhou don't install the seals backwards (look at the old ones before you take them off).
IMHO, the trickiest part of replacing seals is removing the impeller.