Sorry. Just not buying the random angle. Police even said he probably knew her either personally or through being a customer. He was also seen there 2 hours prior. That leads me to believe that my theory is more in line with theirs; that is, that he was obsessed with her even though he may not have given her or anyone else any overt signs of his delusion. Not to be crass, but stalking other'clerks in the area just looking for a random opportunity doesn't hold up due to J's specific characteristics. Most clerks aren't young, female, extroverted, and highly attractive. The chances of there being another one in such a small area at the same time is slim.
He wanted her. He chose her. He waited for her. He took her. Not unlike someone having a secret fantasy about his favorite bartender or waitress, and then acting on it. He plotted this meticulously, IMO. He probably parked somewhere where he could see her for hours until he built up the courage to do the deed. The 9pm drive by was a test run, IMO, and could have even been the first attempt but for his hesitation and/or customers being around. Heck, he may not have had plans to do it until she rebuffed him at 9pm and he lost it . This would consume a narcissist with rage.
