There is a group of us from Oz and NZ on here known as ANZMO, the Australian and New Zealand Marlin Owners.
I will send you an invite to the group, and you can find our members only space under the Community tab at the top and then hit groups and you will see ANZMO. But mostly we have our say under our sub forum within the 336 forum, as well as all over the site as we have opinions on everything!
Look forward to hearing more from you.
As Gus says the pep sights are great, or if you are going to persist with open sights try the merit optical attachment, a little peep that suction pads to your glasses.