The money that your community has stumped up should be enough to get you started.
Scotland is 'hilly' to say the least but you can use that to your advantage to zig-zag wireless signals down the glens. The lochs are nice and flat so you can get signal from one shore to another. You may need to get very good at solar and wind power and batteries for mountain top repeater stations. Someone within wireless reach will have a decent ADSL service. You can kick off by connecting to that or to the Satellite service you mentioned. Just plug the CAT5 cable in and let NAT and DHCP do the rest
I maybe over simplifying but if you think it's too difficult you won't try.
People have high expectations these days, if they can't watch TV in HD over the Internet they throw their toys out of the pram. The biggest impact of Internet is simpler things such as web sites, email, online banking, social networking and a bit of YouTube. If you want to watch TV then buy a TV.
Set your sights on what matters and get on with it. You have computer experts and people who can climb roofs within your community. So what if they don't have a government approved certificate, do you ask the government before blowing your nose (I was going to say something else)?
This is your community and way of life you are defending so behave as the situation requires
Connecting you to 2meg or more in rural Essex