Something to think about, you might would want to cancel Verizon to switch a different carrier someday. I’ve known people had bad experiences with Verizon, even AT&T and T-Mobile. You might want to look into mobile virtual network operators, like Cricket, MetroPCS, Mint Mobile, etc, which are lot cheaper but they use bands under major carriers. So if you decided to switch to different carrier, would the same modem still work?
There’s discussion about choosing the right modem here.