Tromso, My last love. I spent three night there in Tromso/Lyngen area in November 2019. Although not lucky enough to catch the Northern light there but over all experience was fantastic.
The part of my route is just similar to yours. I did Tromso/Lyngen - Stockholm- Villnius - Riga- Tallin- Helsinky and back to home.
Plz post more pictures