Yep very happy with how my traveller rides, I personally wouldn't change anything else on the suspension as the car is now just as I like it - handles very nicely
When you the drain the old oil put a container under just in case anything drops out, the are a couple of small washers in there so best to be safe. Then when you are re-filling you will need to bounce the car on its suspension to get the new oil where it needs to be, pulling up as well as pushing down to get as much travel on the damper as possible - you will certainly feel the resistance once the damper is full. It's best to then drain the oil off again as a flush and repeat the filling operation.
A bit of advise - wear some rubber gloves when you are draining the old oil. it will probably be as thin as water and stink of fish