Newbie seeking expert/experienced advice on Sat

Looking for advice from the experts and experienced.

My situation:
I'm a freelance writer for the high-tech industry. Currently living in a fixed home with cable Internet @ 3Mbps (I'm spoiled). I live by the Internet, frequently downloading multi-megabyte files and uploading multi-100kbyte files. I rely on e-mail, web, ftp, and recreational surfing, sometimes streaming from training sites. I'm not a gamer. I used VoIP with my cable service and loved it, but cancelled it because of my plans, which are:

I'm planning on working on the road in a large 5th wheel. I have Verizonwireless cell-based data service as Internet access for locations where service is available, but considering satellinte as a backup for non-service locations.

Concerns:

One of my concerns is with FAP punishment. I need bandwidth when I need it, and can't afford to be dialed down. Is this a valid concern with satellite and my bandwidth requirements as described above?

I'm tech saavy, engineering background (although not RF), can even fabricate metal for moutning, etc., so I can deal with some installation & technical issues, but tech support is a must for emergencies. Is tech support an issue with the service providers? Are they timely, friendly, and helpful?

Which provider has high ratings (from the experienced and experts viewpoint) for uptime, continuous throughput, signal/data quality? Starband? Direcway? An Independent installer/provider?

Is VoIP an option with Satellite? Is it reliable? Is the latency a big headache and annoying? Does satellite support voice over IM very well?

As a note on comparison, my alternative in areas without Verizon service is to plan on being near a hotspot and popping over to it every hour or so to check email, do downloads, etc. (My experience with RV parks that claim they have wireless Internet is that unless you're 50 ft from their antenna, or you have an external antenna with nice gain, their service is worthless. Although, I just thought of something. It might be worthwhile to buy a 2.4 GHz dish and set it up for wireless access in the RV park. I'm doing that now and sharing my connection with a guy 4 miles across my valley in a direct link. Hmmm.)

I've surfed around for info/advice along this nature, have found some experienced and knowledgeable people here, so any input you have will be greatly appreciated. And I've bookmarked this site, BTW. It's quite handy.

Thanks. I found a distributor and set up I'm going to try.