Looking very nice.
I am assuming it's a display only model? To make that wood prop work, just find a wooden dowel that fits in the hole and then adjust the hole size in the thrust button as needed.
As for the landing gear, you can buy wire at some craft or hobby stores. But, a search around the house might yield something.
I have used sewing needles, the head on the needle makes a nice hub to keep the wheel on.
Too sturdy up the landing gear, can be difficult. From the pictures, it looks like you could wrap sewing thread around the stringer and exposed wire ends. With the thread pretty much soaked in glue after it's wound around the parts.