I don't wish to criticise, but have you researched what is entailed in caring for a dog, it's not, as I'm sure you know, just a cuddly plaything.
I would assume, as you want a dog walker, you are unable or unwiling to walk the dog yourself or you intend to leave the dog alone for long periods of time, (hence the cage training comment)?
It is my belief, if you do not have the time to spend with a dog, due to social or work committments, then surely it would be kinder not to have the animal. Dogs need lots of social interaction and company, they are not unlike small children. Perhaps a more independent pet would be better?