Well, about the heater box since we really do not need heat down here I may bypass the heater .Heater cables are not too much of an issue:but if the heater can be installed I will .Any console with a clearance of 13 inches or more should work.When my AC tech installs it I will tell of any issues he might encounter.I live on a tropical island so AC install and repair is done on an everyday basis and the techs are very knowledgeble.