Hi,
I'll go ahead and reply, though I'm sure that Prof. Tilley will come in and fill in the gaps in my knowledge.
The anchors -
Hain't seen the ones in the kit. They should be fairly angular, no real arch to them at all.
The rigging -
By the time that the Hanseatic cogs were coming into being, standing rigging was beginning to evolve to the point where it was more a ships' structure. Not ratlines yet, but the shrouds spent more time up than down. Blocks would have been fairly simple affairs. The shrouds would have been rove through hearts, more than likely.
Hope this helps, or at least is a start.
"I have loved the stars too dearly to be fearful of the night..."