On Saturday after five days of walking I also completed the Upper Carniola Jakob's Path myself. It was unforgettable, especially because I witnessed the sunrise at Višarje on my birthday.
The path takes at least five days, six would be even better... It's long especially from Bled to Kr. Gora and from Kr. Gora to Višarje. I would shorten the last stage a bit myself, to have less flat and easier step into the climb. Otherwise, despite occasionally unclear markings, a wonderful path and feelings that can't be described... So - go on the Path.