Selling on Craigslist ?

I am selling 5 pairs of men's Pumas on Craigslist. I have an interested buyer who wants to buy them. On saturday night, we agreed to meet around noon on Sunday. I told him I had to go to church and I would let him know when I was done. I texted him aroud 3:30 to meet at a local Starbucks. He told me that he thought we were meeting around noon and he had to meet someone at 5:00 and it cut is close. He texted me and asked how late I was going to stay up. I texted him that I wasn't sure and I had dinner reservations at 8:30 and after that I wasn't sure. I also asked him if he was going to be in the area (since he lives kinda far). He said he won't be free until MIDNIGHT! That really freaked me out! And I nicely replied that we could meet some other time in the day time and to let me know when it's best for him. So today, he texted me and told me that we can meet at Starbucks at 7:00pm. I kind of don't have a good feeling about this guy. Does he sound suspicious or weird?