Vietnam Train Trips

[Pattaya57]

I'm shortly heading to Vietnam and want to go to Ho Chi Minh, Nha Trang and Da Nang (will do Hanoi next time). I've worked out the following daylight train trips to hopefully see a lot of the countryside.

Ho Chi Minh to Phan Thiet
(4.35 hrs - 06:30 - 11:05)

Phan Thiet to Nha Trang
(3.53 hrs - 09:46 - 13:39)

Nha Trang to Quy Nhon
(4.30 hrs - 13:59 - 18:29)

Quy Nhon to Da Nang
(5.23 hrs - 08:17 - 13:40)

Any thoughts? Am I missing a great place or maybe wasting my time stopping in Phan Thiet or Quy Nhon? (I'm just trying to shorten the daily train journey but they did seem interesting)

 

I've downloaded 12Go travel app which seems to be easy way to buy the train tickets?