Hi everyone - we have a 7-seater MX and a newborn on the way. For an infant car seat we are looking at the (1) Chicco KeyFit30, (2) UppaBaby Mesa or (3) Clek Liing car seats. We've seen mixed reviews about fit for some of these, and nothing for the Clek Liing which is a newer seat. Can anyone confirm fit for any of these? We keep the rear row down 95% of the time and would install in the middle row. Thanks!