Spent some more time in the garage today. Have the main layout of the floor complete. I don't want to go any further until the frame is completed and painted.
Cut and fit the main floor panels.

I routed and overlapped the panels to make the floor act as a single piece.

The tongue box will be integrated into the body. So I used the same technique for joining the panels. I used a hand chisel to square off the corners of the routed area.

Fits like a glove

Shaping the floor of the tongue box.

And all together.

Still have to glue everything together. That will have to wait until the frame is completed and painted. I should have the replacement part for my plasma torch tomorrow so I can finish the frame construction this week.