I have a PTO pump/3ph reservoir and a loader mounted hydraulic blower. Works well. Not crazy GREAT, but really rather well.
It is very important that the available PTO power, PTO pump size, and hydraulic motor sizes are correctly matched to the application. For example, too much pump flow and/or too small hydraulic motors will yield a fast spinning snowblower when not blowing snow, throw a good distance moving small amounts of snow, and bog/pack with snow when loaded heavily. My system was like that before I got everything better matched. It made for a miserably performing setup.
My GUESS is the HRS30 flow is a bit too large for your PTO power and the "spin fast, bog fast" I described above may be the result. To know for sure will require trying it out or consulting with someone very familiar with very similar setups.
The HRS30 without a cooler should be fine for winter use, especially with snow dust in the air!

Too big of a pump and/or too small of hydraulic motors will not be your friend however.
BTW, I think that blower is 66" wide which I THINK is several inches narrower that your NH. If so, it will work, but not ideal. Especially inside turns.
P>S> I live about half-way between Syracuse and Watertown. We might not be far apart. Snow planned for tomorrow!