Can you purchase a (Bulk Head) packaged unit???

My step family have a large kitchen with alot of heat loads, when summer comes along
it becomes a furnance

their is no chance of split, cassette, or underfloor cooling due to the design of the house.
BUT there is space above the kitchen cupboard and behind that lies a void where i can pick up power and drainage ONLY

No room to run pipes to external unit (condenser) roof top cant be drillled through either

So my only option is to install a unit primarily above the cupboard where there is enough room for a concealed bulk head type unit.. BUT it needs to be packaged (all in one)

are they available?? aussies wb only