PoR is a quintessential (spelling) Aussie Hop,
Used in many Typical Aussie beers, personally I love using it,
I have a second year PoR plant but have not achieved a good enough harvest to use my own yet, plenty of growth & flowers but poor quality, My flowers smell like lawn clippings.
Not sure if it is my location or just this particular plant yet?
If yours have that pungent smell then the late additions will go really well with a truly Aussie beer like a Coopers Pale Ale.
As for quantity, that is for you to decide, depending on the quality & potency of your harvest, just give them a few days on a mesh screen, in a warm, well aired place to dry a bit.
Edit:- bugger...Doc beat me to it
Cheers, Mick.