Limo help please

Ok so i am totally lost and not sure what i want...

I have 14 total in our bridal party:
1 MOH
3 BM
2 Jr BM
1Best man
3 GM
2 Jr
Bride and Groom

My son who is 1 of the Jr groomsmen will be 3 at the time of the wedding and will probably ride with my in laws in their car so i need a limo for 13 people. 3 of the above 14 are children, 9,11, 13. I am trying to figure out which is the best route to go...

1 18 passenger truck
2 10 passenger limos
1 limo bus..that way we could add a few others from the hotel.

We are getting dressed in seperate locations, going to a location for pictures then to the RH for the ceremoney and reception. I want us to be comfortable in the limo but i am also trying to do whats most cost effective. Can you please give me your opinions and the limo companies that you are using. I am also looking for quotes. IF you feel more comforatble FM me with your quotes.

We have 15 in our BP, but my FG and one RB will probably go in different cars because they're young. We are getting a Limobus for the BP and FH and I.

We booked through Camelot, and for the Limobus and a stretch Navigator (for parents) it's costing under $2K.