Delton's a sketchy area, particularly the part pushing up against Alberta Ave (118 Ave). I've heard that CMHC has blacklisted Alberta Ave (to the south).
It's a tough area, and both Delton and Eastwood (to the East) attract a lot of drug dealers, prostitution and crime. I don't see it having the development potential of a Queen Mary Park, Central MacDougal or Spruce Avenue. You need to be both experienced and patient to manage in this area, as most property management companies won't manage single units here. There are deals to be had, but you pay a high price in other areas.
What attracts you to the area? With a little more info on what you're looking for I can suggest some alternatives.