The one thing you need to consider is that sometimes the shipment won't get there on that exact day or time. So if you place the order with Friday as your delivery date, and something goes wrong, you may not receive it until Saturday, or maybe even Monday.
If you look at the NY/NJ/CT's last buy, they were lucky Josh was on top of staying in touch with the shipper. He found out the shipment wasn't even scheduled for that day, luckily they put it together to get him the shipment delivered that day. So remember things do happen that are out of your control when working in a very small window.
If you make the order for delivery a day or two in advance of when you are going to meet, you can usually rely on it being there waiting for you unless some tragic event occurred. This is why if you ship directly to their freight terminal, you can usually leave it there for a couple of three days with no extra cost to you. They usually have 24 hour pickup Mon-Thurs. and Friday it may be shorter hours. The only problem is there is usually no pickup dates available on weekends, but that depends on the terminal you are using so you must contact them first!
Hope this helps you guy some