are you sure he needs a kill coil? just looking at the listing and it says "Ready-to-use coolant: This coolant is a ready-to-use coolant which can be put directly into the cooling loop."
and
" Mayhems Pastel Fluids has biocides and inhibitors included in the mixture. "
correct me if i'm wrong though, I bought some of this and didnt use a kill coil.
Definately consider a drain port, either using a T fitting or a quick disconnect.