Hey solo,
From reading your post it seems that you will need a vehicle ...
1) good on mileage, 2) have plenty of room for storage
I would suggest looking at the Mazda5. It's crossover minivan. Seats 6 and got lots of room, 2.3L engine and 157hp. It might be not be as powerful as the others ones you have in mind but it's good on gas. As you said you won't need to tow anything, I think it is sufficient. Great price tag as well.
I'd also suggest looking at the Nissan X-trail ... although i think CRV would be better but i don't know it too well ... just another one to look at
Good luck!