I think you're heading in the right direction after perhaps finding your natural training cycle by default. Or possibly it's too aggressive this early, depending on your winter. Is your iron ok? And are your recovery weeks light enough? Or perhaps masters? Friel recommends more rest for masters between hard days (just as you have suggested) and trying a 16/5 or 15/6 kind of pattern. If you are self-trained, I'd recommend The Cyclist's Training Bible. Very thorough and covers women.