I can't comment on framework since I don't use any.

For starting, do not just start coding off the bat. A project of that size will take careful planning unless you want it to be a jumbles mess. Go to each application and start thinking of how you are going to make it. Make each individual one separately, but remember that they will be integrated. When they are done start integrating them together. If there are portions that will be needed in many apps, code those as you go (as soon as you need it, code it).

Here is a question for you: Do you think you can maintain motivation throughout this project? A common problem with people who take projects this large on is that they loose motivation and dump it after about a month (sometimes two).

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