RZR 900XP and looking to add back seats and roll cage

Currently running a RZR900XP.. 2yo daughter is my current passenger, strap a car seat in place and her and i go out rippin. Added a little boy to the fam this time last year so now we're looking to take the whole crew..

Thinking about adding the 2nd row of seats and roll cage to the rzr opposed to a 4 seater. Any longer and my enclosed won't fit the rzr with my sled and i can get the 900 on my deck right now so thats handy..

Any experience with rear seats kit and how did it work?

Thought about a ranger with a bench seat as well, same wheelbase, more work oriented.

don't do it had one on my razor for my little grad kids and they only road 2 times. the seat is 2 feet higher then the driver and when you hit a bump the little guys heads with there helmets take a beating. we took our 6 year old on a poker rally and he cried half way through it and never got on it again. if you drive slow and don't go over rough trails go for it we see a lot on the trails and one in our club take there little ones. we found that when they sit in the seat with a helmet on there heads are bent forward and they can't see very well. we tried a neck brace but found the weight of the helmet is to much for there little necks. i would see if you can find someone with one and try it before putting out 2 grand. my 8 year nephew old tried it but because he was taller he would hit his helmet on the roll bar every time i hit a bump