Making Iksar - Looking for faction building info

[Yanomamo]

So I'm rolling an iksar and was thinking about doing the first 15-20 levels with hand-ins since i might as well build up factions to bank in FP or wherever.

First, does anyone know approximately how many orc scalps will get me to indifferent or at least not KOS?

Are there certain areas of Freeport i should avoid?

How about Crushbone stuffs for Kelethin/Kaladim?

Basically i want to make it as convenient for myself as easily as possible, so any info or advice would help.