Guys. i plan to go Korea in 20th - 30th Oct.
Do you think it is too late to start planning now ? Have not book anything or plan on anything.

Basic
Seoul 4D3N
Busan 3D2N
Jeju 4D3N ?too many days ?

Which ski area should i go ? near Seoul.... because i plan go ski only last few days so if injury will not affect the trip .

Incheon -> Seoul
Seoul -> Train to Busan
Busan fly to Jeju
Jeju fly to gimpo then Incheon..