Whenit comes to these things, trial and error is best. Look at your airholes, and how you want to maximize your coil to air surface area, compromising as little as possible with your coil to wick surface area. Whether you build parallels or twisted, vertical or diagonal or horizontal, center post or offset, how you pass the wick through and/or under and/or around your coil, is all experimentation. My current set up is a dremel'ed out tobh with a dual parallel 24g 5 wrap horizontals offset to get around the teeth on the tobh deck. It works well for my particular atty, but a stillare is going to be very different.
The resistance of your coils will basically determine how much heat you'll be generating (duh), so you need to balance that with how much airflow you're getting and your inhale technique as well. Too much heat, and you'll be hurting yourself and getting a very warm vape. Too little heat, and you lose the vapor production. It's all a fine balancing act. Don't just look to CCI and the vapesheriff videos and think, ah, if I turn my top cap to swiss cheese, I'll get more vapor. Remember, sheer airflow quanitity is one thing, but airflow velocity and the path the air takes over whatever coils you've built is crucial to picking up the vapor off the coil.
Good luck and have fun! If you have any further questions, feel free to ask.