First of all, you are putting in a lot of items that simply aren't fact. When you say Honey was wearing outdoor clothing, that is not true. All we know is that she was wearing the same clothing that she wore at the meeting earlier in the day, likely casual clothing. You talk about hand restraints, but again, these are things that the coroner never noted and were only pointed out by the family hired expert (hired specifically to dispel the suicide theory).
I'm not sure that Barry was trying to stage this as a murder or double suicide, he was simply trying to hide the fact that he had murdered his wife. Why did he take her to the pool area? He had already strangled his wife, so that had to be the method for both of them. There are not many places in a house that you can hang yourself and your wife side by side, so the pool would likely have been his only choice. I would assume that he likely dragged her there by her wrist as I'm not sure he was in a physical condition to carry 120lbs that distance. This is where I would guess that the abrasions to Honeys wrists came from.
As for the jackets behind their backs, Barry may have been aware (as I am) that when somebody is being strangled or choked, the natural reaction is to claw at your throat. This leaves marks, and their had to be an explanation as to why Honey did not have these marks. The jackets acted as a straight jacket of sorts, insuring that there was no marks.
Lastly, the police spent considerable time search sewers and roofs. In my opinion they were looking for a phone that may have been missing. IMO Barry researched how to do this after Honey was dead and at some point he left the home to dispose of the device to ensure nobody would be able to check its history.
And remember, the family was irate at the suggestion that police considered this a murder suicide. It was then that they assembled a team to refute that suggestion. Either they didn't trust the police, or they simply didn't like what the police were telling them. I believe the latter.
The family was connected politically, and after face to face encounters at the funeral, it is more than a coincidence that the mayor met with the police chief to discuss this case. And very coincidental that within days of that meeting the police announced what the family wanted all along, that this was a double homicide. What makes all of this even more suspicious is that since that day there has not been a word spoken by LE, by the family, or by the family's investigative team. LE can be quite, but they do generally plea to the public for assistance. The family, with unlimited resources, should have offered some sort of massive reward for info by now. And the family's investigators were all over the new from the moment they were hired, yet nothing but crickets since the announcement. IMO there is a consensus by all parties that the sooner people forget about this case, the better.