Six months after Peregrine Financial Group Inc. collapsed in scandal, the son of its disgraced founder is struggling to move forward. Russell Wasendorf Jr., who worked under his now-jailed father at Peregrine for 22 years, is fighting a lawsuit from a group of the firm’s former clients, who say he missed signs of wrongdoing. At the same time, the 42-year-old is trying to figure out his own next move. He has relocated with his family from Peregrine’s base of Cedar Falls, Iowa, to the Orlando, Fla., area, where he is looking for work as a consultant and considering moving to…