This was a fun build and turned out better than I thought it would.
With just the flat, upward facing pieces filled and smooth the model looks good.
The 24mm engine conversion was easy to do. Will it survive the boost or reach the Speed Of Balsa? Who knows.
It'll be flown with 18mm engines first and the D12 engine later.
For a lot of 1/16" thick balsa, the structure seems very strong.
Here's the views from the side with the launch lug and from the rear.
To keep the weight down, I didn't worry about getting paint in every nook and cranny. I just shot the flat surfaces and let the paint fall where it wanted. You can still see some bare surfaces if you really look.