Hi Amy

My twins where both breech my whole PG and they ended up being born at 33 1/2 weeks both breach vaginaly so can't help whith that question can only let you know you can birth breech twins.

The car seat thing is hard cause we have 15year old she sits behind the driver with very little space and our 3 1/2 year old sits in the very back of our 4x4 wagon.
When me and the kids use the commodre sedan 15year old in the frount and all the little ones in the back we found that trying to fit 3 seats in the back a bit squishy so 3 now has a seat that is just a base she calls it her bum bit still akward but we get there we still put the 3year old on one side cause she has a bad habbit of pocking and prodding the twins.
Jean