Go with modular/sectional. I did that with my layout and it took the move perfectly. You won't regret it. I've seen too many layouts destroyed by moves.
I'm 100% on board. I've been exploring construction styles to work out what will be best. I want to keep it super light. I'm leaning towards doing a reverse loop - to - reverse loop layout (instead of a circle) to get the most length with a single track main and keeping the modules very narrow - like 18-20" wide.