For now Sakura cycle line is only available for NW to SE, part of the station and tracks is still under development in SR.
I was suggesting two station that wasn't name, as: 雪野原,剣域. Ocean station would be as the division sector between WR&SR.
It takes 3 days to check and replacing station and improvements for mostly SR rail works.
For Northern part, I suggest to build a line from NW station, through the east, to build a station before the rail leaves NW island.
Then link up with North Spawn area, which the rail line are able to build at least two more station, and recommended to be underground in land but outside as bridge sector as sea part.
Rail should link up with rails that now link up from Southern station in north islands, to the exist railway system to north east.
Station of NE,start then here, build to the south,towards eastern part, recommended two station on land between it, using the remaining exist rail, from east spawn station to eastern south terminal station, one station between, to N-E. Which is recommended to build in underground from East to East Southern terminal.
TOTALLY,
More than 100,000 of stone bricks, 50,000 stones, 25,000 rails, 5000 Redstone tracks/torches, 5000+,light sources, and 1 month to build.
This is the recommendation of the line develop.
Southern Rail builder,
StrickerRei,
SR is still under develop.