My family's 2 year contract ends soon around July 2013.
With no more 2 year contract sign I figured you have to pay for phone in full price. (btw it's 3 ppl in my family and all want galaxy s4.) I don't want to pay full price of the phone because it's very expensive. But the new value plan for 3 lines seems very nice.(Cheapest is $90. Currently paying around $170.)

So I was thinking is it ok to change the family plan for $90 one's at local Tmo store now. Then upgrade the phones at Costco or BestBuy with 2 year contract for phone discount and keep that $90 plan.

It seems perfect with phone discounts and cheap plan.
Thank you.