possible
Of course
You can also do it with a foam cut core and get extremely accurate results

It is necessary tho, to buildup a sheeting with some grain orientation which permits a compound bend
In foam- you have the luxury of a shell and a underlying shape which traps the balsa sheet into a compound bend
using ribs n spars you have the transition from point to point which can easily producee some waves and dips you really did not want.
But give it a go - at least you won't be bored
frusterated perhaps but not bored.