Sounds pretty cool. You might want to look at MIT's winter term (one month) web programming competition/class for some inspiration: http://6.470.scripts.mit.edu/2014/.

They do a mixture of lectures, office hours, and guest speakers, and culminate with a final submission for prizes. Not everyone has to enter the competition and there is also a rookie flight and an experienced dev flight so everyone can participate. Gathering corporate/start-up sponsors to get prizes for a contest seems to be a good way to spur interest and motivate people to learn (at least it was for me).