3 Boosters in a Row

I had 5 kiddos close to the same ages as you will! 5 kids in 8 years! Crazy but fun!
Do you have to do the 3 boosters across the back row? It is really hard to do 3 boosters together because it is almost impossible for them to buckle their seatbelt. The boosters, when there are 3 of them, block the buckles.

If you have the bench seat in the second row I would put the 2 carseats that still have the 5 point harness with a booster in the middle. Then 2 boosters in the back. That is what we did. The big kids had to get in the car through the back. They liked hopping over the seat :)

If you have the 2 captain chairs in the middle row of your car, you just have to have the 4 year old use a 5 point harness carseat. Hopefully it will fit!

Good luck and congratulations!!

I would more consider a narrower harnessed car seat for your 4yr old or 1yr old, that can be installed in the third row in the middle, so two boosters can go outboard (on either side). The Sunshine Kids Radian (their new name is Diono) while spendy is a narrow seat that your 4yr old can sit in (harness, he's still pretty young for a booster) or your 1yr old can use it rear facing. That way your older two can sit outboard of the harness seat and still reach their buckles, then another and bab yinthe second row.

We did a car seat and 2 boosters in the back of a cavalier, so pretty sure that even though it will be tight. You should be able to do it and the 7, 6 and 4 should be able to be in just butt boosters making the booster cheaper and smaller. The seven year old has a new chore of making sure that all her siblings are buckled before themself and getting a special treat for it, such as their choice of movie or even a 25 cent allowance per week for the extra help. WIth this amount of kids it's time to employ the if your old enough to help you do.

Go to toys r us and try different boosters to see how they fit in your van. Keep in mind that if the middle only has a lap belt you CANNOT use a booster seat in that position.
The graco turbo boosters seem pretty narrow to me.

Go to Walmart and measure the seats. We have the same dilema - our 5 year olds will be in boosters for a while, and I am due in a couple weeks and needed to fit a baby carrier between them. We did get a bigger vehicle, but we also measured at Target and Walmart, and while they both have thinner seats, the Walmart ones were thinnest. Hope that works out for you, espeicially since the cost is low.