Agreed. Ultimately, social liberalism and fiscal conservatism are incompatible in the long run. The former destroys any chances for the latter.
That depends what you mean by "social liberalism." If by social liberalism, you mean that people have the right to make stupid and self-destructive lifestyle choices, and then get bailed out through government healthcare and other social programs, they are incompatible. If you simply mean that people have the right to make self-destructive lifestyle choices themselves but then can't count on the public dole to bail them out, there is no inconsistency at all.
Making the war on drugs part and parcel of conservatism has been about as productive as bringing back the Prohibition Party.