Family of 6. That way you can all go together...and if that sounds sinister thats exactly what happens. Read about it frequently in the Air Accident reports. I have four offspring, and 18 grandkids, and I only ever took one ADULT child up at a time. Even then they got bored fairly quickly. What you really don't need is small bored and airsick children and a wife who is wondering how you could spend all that money on YOUR toy!
Now as for taking up your business associates, if they have any brains at all they will fly commercial. Otherwise weather can ruin your plans and your reputation..... How many hours of experience and ratings before you truly qualify to fly safely? Get real!