What I have found out on internet is that Abu Hanifa was against Wakf because he was of the view that Wakf should NOT be a permanent and that Wakf of moveables could NOT be made. These two opinions by him were against those shared by other jurists.

Regarding Khula, it is indeed dissolution of marriage demanded by wife. But either husband can dissolve marriage if asked by wife or else, wife CAN resort to court for dissolution of marriage on the account of reasons as given in Dissolution Of Marriages Act 1939. And you are right about the fact that wife has to forgo the right of dower when dissolution of marriage is initiated by her.