Nagano snow pass vs Jr pass

Hi there,
I was planning to use my Jr pass while traveling from niigata to nozawa onsen to monkey park,zenkoji temple and finally to Hakuba. I have already purchased a 14day Jr pass, and now stumble upon Nagano snow pass. I understand that there might be private busses/train to the monkey park but surely I can just go with Jr pass and pay a little more to get on the private busses/train instead of getting a Nagano pass right?

Nagano pass is 2500(1day),4500(2days),6000¥(3days). The pass pays for:
1. Hakuba- Nagano line
2.nozawa line
3.shigakogen line
4.Nagano dentetsu Nagano line
5.kanbayashi line okushiga kogen line kumanoyu suzukirawa line to kanbayashi onsen

I guess my question is which line above is not covered by JR, and will it costs a lot of travel?
Thank you
Regards,
Pei