Transport from Hakuba to shirakawa

Dear all, Trying to find my way from hakuba to Shirakawa Kanja. What is the cheapestand shortest time of travel. do I have to via Matsumoto to get into shirakawa.

http://www.japan-guide.com/list/e1104.html, from this website, it shows that l can trav el by train from hakuba - toyama - takayama - shirakawa by bus. But HyperDia shows different route. I am confused, hope to get some advise from the experts out there. many thanks in advance

It is necessary that you ride the bus Takayama bound for Takayama from Matsumoto, if you want to go to Shirakawa-go via Matsumoto. Hyperdia not be able to search the bus except for the airport shuttle bus.
Matsumoto - Takayama Bus
http://www.nouhibus.co.jp/english/matsumoto.html
Takayama - Shirakawa-go Bus
http://www.nouhibus.co.jp/english/shirakawago_kanazawa.html
Route:
Hakuba -(Oito Line)- Matsumoto -(Bus)- Takayama -(Bus)- Shirakawago
Travel time is about 5 hours. Total cost is 6,800 yen. If you buy the Mitsuboshi Route Kippu Matsumoto, it is 6,280 yen.
Mitsuboshi Route Kippu:
http://www.nouhibus.co.jp/jikoku_pdf/20140401_mitsuboshi.pdf

Then, the route to go to Shirakawa-go without passing through the Matsumoto is as follows.
Hakuba -(Oito Line)- Minamiotari -(Oito Line)- Itoigawa -(Hokuriku Line)- Takaoka -(Bus)- Shirakawago
About 6-7 hours, 4.390 yen.
The bus to go to Shirakawa-go from Takaoka is operated only four times per day.

Hakuba -(Oito Line)- Minamiotari -(Oito Line)- Itoigawa -(Hokuriku Line)- Toyama -(Takayama Line)- Takayama -(Bus)- Shirakawago
About 6-7 hours, 6,470 yen.

I mistyped the first line. Correctly is the following.
It is necessary that you ride the bus from Matsumoto to Takayama.

Hi Passby168,
Thank you for the detailed routes, this is really helpful. Since the travelling is such long hours, we might have a stop at Takayama before arriving Shirakawa-go. Cheers.

Hi, May I know is there large luggages compartment below the bus for these following route?
a) Matsumoto - Takayama Bus
b) Takayama - Shirakawa-go Bus
c) Takayama - Nagoya bus

Worry that there might not have enough space for our luggages(approx. 6 - 7 luggages)