It's not a bad idea for the rotation (provided they may no trades), but I think they need a more mobile starting PF with some perimeter skills. Also, while I love Johnson's toughness, he hasn't really shown the footspeed to keep up with guards, and DeMar definitely should be counted on to do that. That makes it hard for me to see Johnson starting without some other guard in there, instead of DMDR or Lyles.