For the Azores I used a single Imray (paper) chart. The comparable chart (E2) for the Canaries might be all you need. It covers the island group in large scale, along with detailed plans of the major harbors. They have a similar one for Madeira. You can usually find Imray charts on EBay.uk for £16 or so, or better yet perhaps you can find used ones from some cruisers.

Lynnie and I will be attending the OCC annual meeting in Henley, perhaps we will see you there.