The 4 x 8 trailers seemed like they were about 49" to accommodate the 4 x 8 plywood easily. The over hang was never a concern. Trailer wheels are the widest point on trailer, so it is not like you’re going to clip kart wheel.
Better buy in bulk. I can never find it in a rush to the grid.
Pretty sure they are the left socks of the tool world.
After you have taken everyone above’s advice, you’re going to have a great start. But after a few weekends, you’ll find that you’d like to have this tool or that tool. And the inventory will grow. Just asked the guy who left for the track the first time with a stock set and a couple for screw drivers. 