In a simular boat myself Phil, just moved to the area and its kind of an exciting prospect, searching out all the new places. But a bit of a task too.
I have bought the John Wilson book (Where to Fish in Norfolk and Suffolk) and an A to Z of Norfolk and so far its been the best thing I have done.
Sad though it may sound, I have been reading the book and charting the referances on the A to Z then paying the odd visit.
The basic jist of the wensum around norwich would seem that from here
down to where it meets the Yare is free fishing, where that red circle is, I visited the other day (its just down from the EA fish farm) and it looked really tastey, couple of decent fish crashed in a run of about 12" deep while I was watching.
Regards the rod, I have a Masterline Signature Avon rod, and its perfect for my needs, one rod most occasions, so would imagine the XL version would be on a similar par.