.
The four foot inside box length determines that, if you don't want a two-piece fuselage.
The teams are scored on assembly time as part of the grade.
Lots of parts takes longer.
.
It is a tad or two shorter than I'd care for.
And maybe a bit of dihedral to aid lateral stability, since it spun in. Lots of washour also.. or skip a seperate horizontal completely, make it a wing and pod.
And put a trike gear on it.
That's what neat about these competitions, there's any number of ways to meet the specs.
But the plane MUST fly also.
The easier that is, the more likelihood of a good placement in the results.