My suggestion is, you should make custom server Launcher / Updater, since you have custom wzs and etc.. So people dont need to search for wzs on forum and etc.. It would automatically update and download new client if needed.
It is a good suggestion though. I have tried to make a patcher in the past but it didn't turn out very well. I should probably try again at some point but I do not know much about the sort of coding which is required for an application like that.
Well its not easy, but once you make it, it will be forever. So maybe my suggestion is, you should pay someone who know how to make it, and then you will have it forever