wp-mu dolphin integration

i would like to build a site for two countries. My idea is the following: i need two installations of wp-mu with the same user table and single login(but totally different content) and the same with dolphin(two dolphin installations with one user table and single login). And than i need to have one usertable for wp-mu and dolphin.
What i have now:
the first part is working well. I have solved the multiple wpmu with single usertable and single loging. I have budypress on it and integrated madiawiki. And i have installed and working dolphin 6.1.4
What i need: (One more dolphin which i can install) But, I cant find anywhere how to make two dolphins work whit single usertable and single login. And than how to make it that wpmu and dolphin work together with single usertable and single login
Do you think is this possible??? Any idea. If yes i would pay for it, of course. please help me
the page is: djbeast.com