Hi Takanori
here are your answers:
A4- yes.
A5-see the attached files where some modification are made to save all polarization cases (will be committed in GitHub later ).
A6-you can check other examples where we use selected length to account for Quantum calculations (wave functions and quantum states).
A7-for the wave function, it was disabled and now it works but only for the last polarization (will be fixed). For now use this values as in the attached file vmax=-3 vmin=-4 to get the last wave functions for v=-3.
regards
hamza