I've made a thread a bit back about this- But now I have more information but still need help with what I will probably need for this shoot! I've never done a professional shoot of a family this large... Caution: This is a long anxiety-filled post.
Specs are:
13 people - 3 groupings
1) The mom and dad with an 18 yr old. (choosing to wear polos- grey)
2) The daughter and her husband with 2 other children: 1 and 5 yrs (polos- white)
3) The second daughter and her husband with 4 other children: 7mo, 3yrs, 5yrs, and 8yrs. (polos- dark blue)
They're all choosing to wear jeans.
Location: Grapevine by Bear Creek Park; Outdoors next to a pond, surrounded by short grass.
Time of Day: I've been able to push to 5:30p (it's difficult to arrange because of the children's temperaments around this time of day) so hopefully the lighting will be fair by then in that area.
The shots that the mother wants is a full family shot, grandchildren, siblings(3), and then each family grouping.
--- So my questions: >> Lighting??
I have no idea how to light this. I've only began to use lighting on an individual. I have a large reflector (I believe it's a 40in.), and a Canon 430EX II speedlite (I doubt that would be strong enough to help?) with no modifiers for that. That's it. I am able to rent from Arlington Camera for a fairly good price.
Here's the link to the rental page:
Arlington Camera - Digital Cameras, Video, Photographic Equipment >>Arrangements?
I figure the children will be sitting or standing at the front. I've looked up family photos to give myself ideas but it's so hard to get the right setup with such a unordinary amount of children to adult ratio. Again, I've never even done a family shoot professionally. Especially this large besides by own family. I figure the "Mom and Dad" in the center of the arrangement, and each grouping on each side. The 18 yr old can be maneuvered in there beside the parents, he's almost 6 ft so I feel that would be the right place for him.
This family is close friends of mine fyi.
>>Lens?
I'm going to rent, I really don't want to have to take this photo with my 18-55mm, I think that would just not be the best that it could be in comparison to a "better" lens.. whatever lens that would be. Any suggestions?
Sorry that I'm such a worrywart, and I'm only 19 so I'm really freaking out on this one.

The shoot is June 2nd 2011, the family is together because the 18yr old is graduating the next day.
If any of you could pleeasepleaaaaase help me out with some of this. (I know this is asking for a lot.)
Thank you so much,
Cherese
p.s. I figured this would go under "equipment talk" because I'm in most need about what lighting and lenses. Sorry if I posted in the wrong place. I'm fairly new at this forum.