I have a hard time believing he could case the house without being observed. 32nd Street curves around before it reaches Woodland so you can't see anything if you are back at the busy intersection at Cleveland Ave. So he would have to observe from somewhere in Mass Ave Heights and as I've written before, its pretty deserted there and he would absolutely stick out. He would have to try to pass as some kind of laborer but then what would he do -- stand around? Walk up and down the street? Whatever happened to the vacuum cleaner salesman?
I'm of two minds here. This may have been DW tracking down the address and just showing up, with others or by himself. I think thats quite possible. But then again, the duct tape, the gasoline, stealing the video system's dvr (and where is that?), make it seemed like it was planned out and if that was the case, I think there's someone else who is either on the inside or cased the home. And that someone else has or had all the missing items like the cell phones. The guy running from the Porsche was not carrying a dvr. I'm on the fence about JW. His behavior -- lying, having something on his cell phone LE wants, (how did he know the specific amount of money? He could have been told when it was handed to him, he could have counted it, but I do wonder) -- is in some way incriminating, but in other ways he does not act like a guy who is implicated -- the texts to the family when he heard of the fire, for example. If he's involved its a Fargo like situation.
I come back to the cell phones. They weren't stolen for their value, not with everything else in the house. They were either taken because they were seen as a record of the crime (with DW not understanding that the communications could be reconstructed), or a record of incriminating communications before the crime, or because it was thought they could be used as a tool to get more money. But I have trouble believing anyone doesn't know that cell phones can be traced.