Previously people have said it well here. TV (for those who want it) is one thing, but internet its something different. I think many of us on this forum have looked for a way, unsuccessfully, to have 'good' network access while out and away. There is a reason why we (military) use massive satellite dedicated trailers and trucks - and we have to have coms, period. There are like units in the civilian sector, typically used for FEMA, or government/civilian research stations that must be mobile, but at a significant cost and size not compatible with 'expo' rigs unless in a convoy.
My point is, and my opinion is, adjust your plans. If you can budget 3 months, which is pretty awesome, why not just budget 6 months. Half of that time can be more or less camping and exploring, while the other half can be closer to civilization where a WeeBoost extender will suffice for a cell network. A week of work, then a week of play, for example... I personally have found great success with my cell network and extender to do 90% of what I 'want' (notice, want...not need) when in areas that are quite far away from 'home'. This might give some better separation too when off of work, to not distract you from enjoying the outdoors. Just my .02