I've done 1.5 GB in less than an hour on cellular, so you have some catching up to do!
Seriously, though, might a landline-based internet service be a better choice to meet your needs?
These are the netflix playback settings,
Data Usage per Screen
Low (basic video quality, up to 0.3 GB per hour)
Medium (standard video quality, up to 0.7 GB per hour)
High (best video quality, up to 3 GB per hour for HD, 7 GB per hour for Ultra HD)
Im set on high, and it's pretty easy to blast through data on it. Its a good idea to look at medium settings if cautious about going over your data.