As said above, it looks like just a dream, without really thinking about it - where does that nosewheel go on retraction; a crosswind will have the props hitting the ground as you kick straight and lower a wing; the tail prop is a worry on rotation for takeoff; asymmetric flight will be a serious problem; and why have 2 sets of airstairs when they could save weight with just one?
There also doesn't look like much room under any floor to place the batteries? They can't be in the tailcone - too far back - and no room in the nose, with the nosewheel strut and wheel, pilot's feet and his big watch.