I started with EoSD Normal 6 months ago. I remember grinding it for days trying to 1cc.
After that I 1cc'd PCB, IN, MoF, TD, SA, in that order.
Then I beat the Extras of IN, EoSD, PCB
Then I 1cc'd EoSD, PCB, IN, TD, MoF on hard
Then I beat the Extras of PCB Phantasm, MoF, TD
Then I 1cc'd IN, EoSD MoF, TD on lunatic and UFO on normal
Then I beat UFO Extra and SA Extra
My path will be Normal > Easy Extras > Hard > Other Extras > Lunatic > Stage Perfects / Lunatic no bomb (i hope ^_^)