Welcome to the forum Ruthie1970. There are so many possibilities you are spoilt for choice. Some good ideas mentioned above. I have always enjoyed mooring overnight in Norwich and the traffic has never bothered me. Avoid Friday and Saturday nights though, they can be a bit noisy when the pubs and clubs turnout! If you leave the City late afternoon, having spent the day there, it may be difficult to find a mooring free until you get to Brundall where you can use the 2 hire boatyards.
I have never been a fan of strict iteneraries for the Broads, there are so many factors that can throw them off course. As long as you have maps and tide tables, see what you like the look of as you pass and make a note of it if it is too early to stop.
I hope you really enjoy your trip and enjoy it enough to want to return - like many of us!