Nine weeks in Greece is a dream itinerary it certainly gives you lots of flexibility. As you seem to have Athens and the Peloponnese sorted, you just need to sort out your five weeks on the islands. What you need to realize, however, is that the islands are not all mutually interconnected, but rather they are ‘grouped’ – both administratively and from the point of view of transport routes. Here are the main groups.
Congress passed the Air Transportation Safety and System Stabilization Act (P.L. 107-42) in response to a severe liquidity crisis facing the already-troubled airline industry in the aftermath of the September 11th terrorist attacks. Through the ATSB Congress sought to provide cash infusions to carriers for both the cost of the four-day federal shutdown of the airlines and the incremental losses incurred through December 31, 2001, as a result of the terrorist attacks. This resulted in the first government bailout of the 21st century.[44] Between 2000 and 2005 US airlines lost $30 billion with wage cuts of over $15 billion and 100,000 employees laid off.[45]
During the era of decolonization, newly born Asian countries started to embrace air transport. Among the first Asian carriers during the era were Cathay Pacific of Hong Kong (founded in September 1946), Orient Airways (later Pakistan International Airlines; founded in October 1946), Air Ceylon (later SriLankan Airlines; founded in 1947), Malayan Airways Limited in 1947 (later Singapore and Malaysia Airlines), El Al in Israel in 1948, Garuda Indonesia in 1949, Japan Airlines in 1951, Thai Airways International in 1960, and Korean National Airlines in 1947.
The other groups are best tackled individually. For example, the Ionians have no ferry connections to the rest of the Greek islands; the same story with the Sporades and the Argo-Saronics. The NE Aegean islands do have a link to the Dodecanese and the Cyclades but are probably best left for another trip once you have got the feel of the rhythm of the Greek islands.
Airlines follow a corporate structure where each broad area of operations (such as maintenance, flight operations (including flight safety), and passenger service) is supervised by a vice president. Larger airlines often appoint vice presidents to oversee each of the airline's hubs as well. Airlines employ lawyers to deal with regulatory procedures and other administrative tasks.[86]

I’m sorry if you covered this in another part of your site, (either I’m technically challenged or there just isn’t a search function for your site) but I’m curious about Corfu. From what I can tell, you mentioned it once in your site under your post about best beaches. The Paleokastritsa area is something that has caught my attention for a while and is on my list, and then I saw pictures of Nissakids Bay and that looked kind of amazing. 

Airline financing is quite complex, since airlines are highly leveraged operations. Not only must they purchase (or lease) new airliner bodies and engines regularly, they must make major long-term fleet decisions with the goal of meeting the demands of their markets while producing a fleet that is relatively economical to operate and maintain; comparably Southwest Airlines and their reliance on a single airplane type (the Boeing 737 and derivatives), with the now defunct Eastern Air Lines which operated 17 different aircraft types, each with varying pilot, engine, maintenance, and support needs.
The so-called pearl of the French Caribbean, Guadeloupe is a butterfly-shaped archipelago of five main islands where volcanoes tower and 200-plus beaches come in shades from black and white to red and pink. Basse-Terre’s tropical forest and the bay of Grand-Cul-de-Sac Marin were declared a UNESCO Biosphere Reserve in 1993. From there, island-hop to discover Grande-Anse beach on Les Saintes; Marie-Galante’s rum estates (and old-fashioned oxcarts); and La Desirade’s 900-foot plateau.
Be cautious with Santorini and kids. Some hotels don’t do kids (check carefully) and not all hotels are suitable for kids along the caldera lip. Many steps, confined spaces and other guests who don’t actually want to hear kids … Here’s an idea – look for a child-friendly hotel (perhaps on the beach at Perissá) and base yourself where the kids will like it and then take them to the caldera scene. There are a couple of child-friendly hotels on the Caldera, but they get booked very early in the year.
Excellent choice of islands, though getting between them presents one or two challenges (they are not as conveniently connected like the Cycladic or Dodecanese islands so island hopping is not as popular in this island group). All three islands are served by airports with year-round connections to Athens and in the Summer with international charter flights from Europe. Let’s take the pros and cons of each island.