Fire codes require that all exits from public places open out to prevent crowds from jamming the doors closed. Storage sheds have outward opening doors so as to not obstruct access to the interior. Most residences will have an inward opening main door with an outward opening storm/screen door. Big crowds are not expected in a home.
I am thinking at this point, that if I need an inward opening door, I will try the two door entrance with two 32" doors. The ones I am looking at come in a a steel frame pre-hung (but expensive!), so I would hope that the seal issue that John mentioned would not be a problem in that case. The double-doors would certainly make moving materials in and out easy, and when I have a crowd of kids or families come by to look at the layout (my hope), the wide entrance would be convenient. Will leave that as an option for a final decision later. -Ken