I think the info was buried in Hextator's doc somewhere or something like that.
Anyway, it should be noted that if you only change the bytes at 0x0A06D0 to Eliwood mode, the game will start at ch. 11.
In my notes I have that changing the byte at 0x0A0748 to a 0x01 will make it start at the prologue.
Haven't got a clue about starting at the prologue in Hector mode.
Also, my notes say to change the two bytes at 0x0A06D8 to change modes (same byte values as what you have, CC, just a different offset). Idk, it's something to throw out there.