Quick update: Solved #3 using this plugin from @DenisChenu
framagit.org/SondagePro-LimeSurvey-plugin/registerQuick
Still pending and figuring out #1 and #2, please advice
framagit.org/SondagePro-LimeSurvey-plugin/registerQuick
Still pending and figuring out #1 and #2, please advice