Suggest you go and get the kids to use the third row seat, understanding the access. Then check the luggage space that remains. It can be handy, but it doesn't offer the same utility as a vehicle designed for three rows for other than occasional use.

Also suggest you drive a 3.0 in an E70. Some had concerns on power, given the additional weight of an E70. It is OK, but I didn't think it was as lively as my E53 3.0. You and your wife may find it just fine.

Finally, the navigation system leaves something to be desired. Yes, it is built in. It is also old technology with a dated user interface.

All the usual cautions about a pre purchase inspection.

Good luck.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue