Lots of people on here dismiss the JetRanger as a kind of 'yesterday machine', but having owned one for 5 years, it's been a great machine for me. If you intend only to use it with all 5 of the family up, there probably are other machines out there that can do the job better, although they WILL cost you more. The one thing I've leaerned in owning helicopters is that they cost more than the guy who sold it to you said it will!! So make sure you have deep pockets, not just for the purchase....
And if you think that you might - like me - travel round on your own from time to time (hell! flying is fun!), then don't surround yourself with even more seats: my rough rule of thumb is that costs increase directly in line with the number of seats. Depending on how old your kids are, I'd only contemplate an EC120 or a B206: there's nothing in your mission profile that tells me you need any more helicopter.