We wenyt through the exact same process 3 months back. We ended up with a Tourneo Connect Titanium, about 13,500, 20k miles, 2 years warranty remaining.
I can fit 4 bikes and people inside, it is far more comfortable to drive and has amazing amounts of passenger space. We went for the 1.6d, I was expecting it to be sluggish but in fact it is not, the gearbox is 6 speed and sucks the power from the engine, 85 on the MWay is about 42 mpg. Around town and A roads, it drives superbly well.
On other areas, loads of storage, the radio is OK but not the greatest, good sound but no bluetooth is my biggest nag. there is a USB for audio though. The rear overhead storage bins are fantastic for storing spares, tubes, oil etc.
Just realised you are after the Custom which is the mahoosive one, sorry!- but, if you look at the Connect, for a family of 5 its fantastic 🙂