Looks like I may be a little late, as you have already decided on a selection.
For a single use blade, I would go with Treet Durasharp. They can certainly last for more than 1 shave, but I have found them to be very sharp and the most comfortable 'first shave' blade I have tried. Being carbon steel, they tend to rust but if you are only using it once not an issue. They are also inexpensive.
With some blades, the first shave may be a little tuggy/rough. The Durasharp is great right out of the wrapper.
For a single use blade, I would go with Treet Durasharp. They can certainly last for more than 1 shave, but I have found them to be very sharp and the most comfortable 'first shave' blade I have tried. Being carbon steel, they tend to rust but if you are only using it once not an issue. They are also inexpensive.
With some blades, the first shave may be a little tuggy/rough. The Durasharp is great right out of the wrapper.