We have a short wheelbase T5 with three kids for everyday duties. Generally pleased with it, kids like it, roomy enough, drives well on the open road and is v comfy on long journeys but you feel the size when parking & maneuvering. We have 180ps 4 Motion so a bit thirsty but goes well.
One thing I would say is be careful on the interior spec you chose, there are so many options and if I had my time to choose again I would change a few things. In particular the spec we have has very delicate material surfaces in the boot space and on the back of the bench seat, means you have to be really careful not to trash it when loading it up and putting things like bikes in the back etc. is not great. We have a towbar mounted bike carrier to help here. Also the interior space is good but the way you can access it is tricky and a bit compromised with the seating we have (two captain seat plus bench seat). Would work much better in long wheel base format. We plan to take the captain seats out when all kids are beyond the car seat phase and this will help a lot. For now it helps to keep the kids separated a bit and keep the fighting down on long journeys but its a bugger reaching in and out due to the seat backs getting in the way! Hope that helps.