You probably need to get a data plan one tier larger than you think you need. Because once you have LTE everywhere you go, your usage will likely go up considerably. It would be a shame to have LTE and not be able to use it when you want it. I have a Verizon LTE hotspot, and it causes me great anxiety to check my data usage every day and try to meter myself out to the end of the billing period.
Also, note that Verizon LTE speeds have been dropping considerably the past 30-45 days in most markets. They are finally getting saturated. Verizon needs to start adding some AWS LTE carriers, but none of their devices support it yet. So you will kind of be in a similar situation as Sprint and their LTE 800 devices not being out yet. Planned obsolescence.
Robert