Foyer in Luigi's Mansion: The Music Box

looking through the tileset of MTMB 2015's intro (for fixing collision) is really interesting. For instance, there's buildings, docks, unused accessories, etc. it's really cool what goes unused in the original version

Which route should I work on majorly first?

[PS: The Mario in the Corridor is just a placeholder lol]

LMTMB Arc has started, I find it helpful that I already knew what most of the endings for the original LMTMB were in the very first demo. Im just setting up a game page now.