3 car seats in the 7 seater Kluger

[HotI]

have a look here

Child Restraint & Baby Seat Fitting Guide | NRMA Motoring & Services

toyota kluger

Comments on any problems or obstacles that are found during the fitting process
Two Child restraints are practical across the middle row. With three, the seat belt buckles are difficult to access.
Three anchor points are located in the seatback.
There’s plenty of legroom for the front passenger.
Rear headrests are removable and seats are reclinable.
Noticed the centre positioned booster seat tether strap was getting logged between the seat gap.

if you have to buy a booster for the oldest, is it worth it to get a convertible booster that will go from 6 months to 8 years?

i am in a similar position, and looking at a convertible booster for DS, and either booster or convertible booster for DD (depending on how it fits in my car). If necessary, we can use Dhs car until she turns 4.