The room next to this one with a dual dischrge cooler has a gravity drain so think it will be ok.

Only one coil, load is about 2.2kw so not much but coil is very expencive so expect two would be over budget!

Was thinking if its wall mounted then they will not be able to put shelving directly below as air off will be too cold. Depends what their shelving plan is going to be like i guess.