This sounds like a great series and one I'd definitely be interested in. Rothfuss (even more than Martin) has me shying away from starting another, currently unfinished, series.
It's a lot more likely that you will get tired of The Wandering Inn before you catch up to present than that you will run out of source material, I think
I no longer care for kingkiller's book 3, TWI has fixed my craving for it.