There is an abbey in my village (in Belgium

Anyway I was looking round at an open day and found out that they don't use the hop flowers, they just let them die off so I offered to rid them of the unsightly mess and harvest them in September for my home brew.
The questions I have are do I harvest all the flowers and what are my options afterwards? Dry them or use them wet and I presume they'll only be good for aroma unless I can find out the strain and then do a test brew if I dry them to see the acidity.
Cheers,
Paul
P.S. There must be about 20 plants there all growing up wires so I reckon I'll have quite a harvest - if I manage to dry them I'll offer some up to forum members as traditional belgian flavour hops - obviously for nothing more than the price of postage and a beer (it's cheap here).