Great spot, but the only problem is you would have to make numerous attempts driving back and forth to the connoisseur store which adds up in time. Yes, the possibility of not getting robbed while you collect items is very slim. But taking the time to pull out a vehicle, drive to Kavala, sell your stuff, drive back home etc will eventually make it a lot bigger risk in the long run and absolutely take up more time. In addition, moonshine and glass, those have to be traded also.
As for me, I live extremely close to the connoisseur trader and have not gotten rob gathering wrecks alone. Mind you, I have made close to 10 million. It's all about efficiency and time management to make great money doing wrecks. But who knows, I might be talking out of my behind, hell, you might be racking up the dough faster and more efficient than I.
GL