Garden4cook you ask if the long tour is worth it. This is hard to answer because what may be worth it to me may not be worth it to you or vice versa.
For me was it worth it when I did it? Yes for me it was worth it but as I said once was enough. I totally enjoyed both the bus and the train but I would gladly do the train again but not the bus. The bus and train tour is just to long for me and I did not see anything on the full trip that would make me want to do it again.
I do not know your likes and dislikes so I have no idea if it will be worth it for you. The only one that will know that is you or someone who has taken the tour and knows what you may like.