If you do not want to walk the route from beginning to end in one go – consider breaking it down into Short and Circular Walks
The best of the bunch on-line is http://www.gps-routes.co.uk/routes/home.nsf/osmapdisp?openform&route=wherrymans-way-walking-route However, one needs to take on board various detours. To find temporary diversions on the official http://www.wherrymansway.net/ on this page http://www.wherrymansway.net/news.php?id=28. However, users do not always find the information here entirely helpful, so good maps are recommended.
E.g. At the time of writing, there was a long detour from the Berney Arms, via the Weavers Way to Wickhampton, which added 2 miles to the route. This was not supported by the majority of on-line maps and guides.
The writer favours OS Landranger series sheet 134, which comes with a mobile download (great to consult when its raining). If one values a physical map, the Explorer Series (Sheet OL40) is big, unwieldy and hard to fit in a map case!
Accomodation: There are B&Bs readily available in Reedham and Loddon otherwise the picture is less promising.