$167 is not bad, and in fact can be great! You can hop on and off as many times per day.(for example if you want to check out a small town for only a couple of hours, then proceed to your main destination).
Even if it comes out to a little bit more, consider the convenience that this gives you and, for me, the peace of mind.
The alternative is that you have to go each time to the train station to price it out and probably ask the attendants (in 5 different countries) a bunch of questions in 5 languages that you might not be fluent in (if they don't speak english). And, if they do speak english, they can still try and jack you on the price because they know that you are a tourist and they can smell how bad you need to get on whatever train that you're aiming for.
The way I see it is that you got your pass... Done. Don't stress out about it, but start planning your tentative route. Have some cash reserves so if you stray from your plans, but another ticket and b-line it to Turkey, Greece, Romania, Croatia, etc... with some other travelers you meet on the way. You can see the world with them for a little while, then go back to your plans...or make them up as you go.
If you feel that you paid too much, you can make that up mowing lawns or washing cars this weekend....just a thought