I put together more pieces and discovered more things ...
- the floor plan tool is good for quick sketches, but the dxf files it produces are less than perfect in sketchup (e.g. the floors tend to get lost). I think I am going to end up using it to make general plans, then when I think what I have is close enough, I'll need to do modeling from scratch in sketchup
- for some reason, even though I told floor plan to make my walls 10' high, they ended up at 8'. This is ok for quick planning, but I would like something more accurate at some point.
So, more pics:
The main floor with the addition, but not yet the bridge. I can see from this that it would be "nice" to stack the doors on top of each other. I don't know that this matters (unlike windows), but it seems more tidy. :-)
Also, this shows what I think is true, that putting in the addition requires digging.
The lower level from a top view, showing the contents (e.g. bedroom & garage).