I've been cycling both E and P for two months now -- and I have to say, the emotional acuity of this regimen has been pretty heavy-duty. But then, that's why I started cycling in the first place, to unlock some deeply buried feelings. I wouldn't actually recommend it for any other purpose. A steady-state regimen is perfectly appropriate as far as standard feminization is concerned.
Progesterone will have an impact on Estradiol effects, though, so you might inquire as to upping your E dose with your doctor if you feel you're not getting enough after being on P.