If you want to go whiteface, go whiteface. It sounds like it's what you feel most comfortable as, so that's all the reason you need right there. I'd love to go whiteface but I've not got the facial structure for it so... If if fits, looks good and you're happy with it then job done. Also it's just a foul lie about whiteface taking more time than auguste makeup: the whiteface tends to be more minimal and requires considerably less blending than an auguste face. The whitefaces I work with tend to get their makeup done in half the time it takes me to do mine.