Hey Monce,
If you look here, you can see the Etheric speed test result archive. »
/archi ··· eric.netThose are the typical speeds that Etheric cusotmers see. Yes, it like gold - Black gold!
It is not satellite, but wireless. You should be able to see the Santa Cruz mountains from your location. Call them to find out the exact locations. No you don't have to be in the mountains, but the closer you are to the SC mountains (Cambell, Los Gatos, etc..) the better chance you have of getting Line-of-Sight (LOS).
Yes, you can run servers as long as you don't abuse the service and hog bandwidth. High-bandiwdth gaming servers are pushing the limit, but FTP, Web, and e-mail should be fine.
Yes, you can try the service out for 30 days. If you are not satisfied, then you can cancel. As far as I know, there hasn't been one customer that has cancelled service, because Etheric will try their best to accommodate your needs and want you to be a happy customer.