So it appears they may be strongly weighing the white van lead? Always thought that was a good lead since I read the neighbor reported that white van suspiciously parked on the street days prior.
I've seen a lot of takes on the internet that say "Look at how he's carrying his gun, this is not a professional, he's a total amateur." My response to that is 99% of criminals are not "professionals." There's not exactly an army of Danny Oceans out there specializing in how to commit crimes to perfection. But I also believe he's more sophisticated than your average criminal. I'd say he was well-planned at the very least. Covered his body from head to toe to avoid shedding skin cells. Wore gloves, disabled the camera, probably avoided major streets so he could avoid plate readers otherwise LE would likely have him traveling on CCTV somewhere in the area.
This may have been the first crime this person has ever committed(maybe not) but this individual was highly planned at the very least, and possibly had planning help and coordination from others. This person should not be underestimated. Maybe not a pro, but definitely sophisticated enough to avoid capture to this point and also probably a little luck involved too, as many criminals who get away with crimes have.