We should not forget about CI. In the past we had a Jenkins with multiple slaves. I think that because of the size we have in this project we should host the CI system ourselves.
We also should do this as fast as possible, because it is crucial for starting the development. I also volunteer to build a team to bootstrap this. I think @LukasReschke and @jyaworski would very likely help here out too 
What are you ideas on this? Feel free to open a new topic regarding this 