Welcome to the forum!
With the new plans, you won't actually have to kick anyone off as you are now allowed up to 10 lines.
With all the lines you will get unlimited talk and text, but the smartphones you will have to pick a data package to share.
So if I am understanding you correctly you will have 2 smartphones (You and wife) and 4 regular phones (son, uncle, parents and other kids). Correct?
If that is the case then you will have the smart phones at $40 a piece and the dumbphones at $30 a piece. If you aren't using that much data then you both may be able to get by with a shared 2GB which would be $60. So it will end up like this:
Smartphone - $40
Smartphone - $40
Dumbphone - $30
Dumbphone - $30
Dumbphone - $30
Dumbphone - $30
2GB of Data - $60
Total = $260 + taxes and fees
If I'm understanding your current plan correctly this would be an increase of about $100 a month from what you currently have at $160. With the current pricing it would only be an additional $30 and dropping someone off the plan.
They will be offering basic plans, but you would have to drop the smartphones for that to work. You could still have unlimited talk and text with all six phones though. Then you would still be at $70 + $30 + $30 + $30 + $30 + $30 = $220 for all six phones.
In the end, I think it is time to start looking for new service. If they actually go through with this pricing model you are going to be paying a whole lot more for phone service.
http://solutions.vzwshop.com/shareeverything/pdf/verizon_share_everything_plan_details.pdf