Organ grinder is either "grab stuff fast and get out" mission, or - just get Smoke Ops armor, it is quite sufficient to carry you through the mission with minimal problems (oh, and better do it during the day). Any chem-resistant armor above Smoke Ops is obviously great as well. Some hover armor works great for early reconnaissance and hounds-removal before the entire map gets filled with smoke.
Ghouls have pretty bad reactions and their weapons are mostly short-range, so rushing them or shooting them from far away usually works great and isn't overly risky.