If you have 5 role chapters, it'll take a long time. Basically you'll have to wait until an Imm is REALLY bored to want to sit through and read all of that. Beyond that, whichever Imm is going through the roles will probably skip over that one and move on to the next shorter role.
But if you're one of the roles that only has 1 or 2 entries? You'll be the one they skip to, instead of skipping over.
Also, it helps to actually be online when the Imms are. If you play on dead times (which I tend to do now), it'll take a while simply because there are no Imms online to read it.
BL: Write short roles, and play during peak times and it won't take you long.