Oh boy, this is kinda what I was trying to avoid. Now there's seven interested people (eight if we count the guy I turned away who wanted to be a son lol). Anyway, like I said before, I wanted to keep this RP relatively small so that there's shorter down time between each individual person's posts and potentially avoid the RP being abandoned like what happened with the other incest family.
Because there's potentially eight people who have expressed interest in this, I think it would be a good idea to just split it up into two families, that could possibly have a bit of cross over later on if things go well. That could either be two incestuous families who get together for some fun, or it could be that the parents are related somehow and the incestuous circle only gets bigger. As for this specific RP, open roles will be filled on a first come first serve basis. That means I will be the son, sexywriter777 will be the dad, SweetAngelofDarkness will be the daughter, and Autumnal Equinox will be the mom. So I'll leave it up to you three to decide whether you want to limit the family to 4, to 6, or let everybody in. As a bit of a side note, being a guy, I'm rather bias in saying that I wouldn't mind having more females in this RP that males.
Anyway, as for the setup, the RP can either start after the family's already initiated their sexual escapades or the RP can play out their first time sexual experiences with each other. It's up to you all for what you want to do.
Another thing to add is that I have a personal preference for the family to be very open and intimate with each other regardless of where the RP starts. That means they're often nude around each other (if not just completely nude all the time), shower with each other, kiss each other on the lips, and so on and so forth. Again, this is just personal preference, and you guys can help decide how you want things to play out.
For character profiles/information, just something basic like name, age, family role, appearance, and personality/relationship with other family members like so:
Name: Steven
Age: 15
Family Role: (Youngest) Son
Appearance: 5'9", 145 lbs, short black hair, brown eyes, average complexion, fit but not very muscular, 7" long and 6" around
Personality: As a typical teenage boy, Steven is going through the rigors of puberty, and that means insane libido. He tries to control himself as much as he can, but it's not easy, meaning he often finds himself masturbating quite often. He's fairly smart, which means that school is fairly easy for him which leaves him with a bit too much free time on his hands. He often wastes away the day without really doing anything productive. As the youngest member of the family, he's been somewhat pampered and doted on, but fortunately he hasn't let that get to his head. He's still fairly down to earth, and when he's home with family, he's rather affectionate with his (older) sister(s) and his mom. Despite his normal complacency, he still tries to help out around the house when he's asked to. He's also fairly close with his dad, and he can often go to him for advice like a friend. All in all, Steven is on pretty good terms with everyone else in the family.
Well, there's my description. Let me know if you guys want me to change or add anything. As a small request, I'd like any sisters to be older than I am in this RP. Thanks. Other than that, this RP should be a fun, collaborative effort, so I want to get everybody's opinions and desires as we discuss how this all will go down. Thanks for the interest everybody!