Yes, I was more interested in having two one-way tickets. This is my first time walking, and I really had no idea how long it would take me.
After investigated youth air fares (I'm under 25), that plus the train tickets are working out to about the same cost as roud trip tickets from budget airlines, $600-$800.
The one-way tickets will probablly cost me more in the end, but with round trip tickets, if I missed my deadline, or came in too early and ended up spending a week or more on extra lodging and food it would have worked out to the same cost or more. Plus, its the luxury of not feeling rushed during the walk.
But, this is all guesswork for me
Sarah