The thing I would say is don't act like it is a done deal. You don't know what is going to happen but if you act like the worst is then it may just happen. Personally,I would wait and see how the time pans out before bringing up your issues, it may be that he addresses it first withut you having to initiate or something else may happen, see what natural events occur without you pushing. If you really want to lay your cards on the table do so but just not right away. They are just my thoughts.
Also, that hair colour sounds really nice, go for it.
