1. Who is the fibre provider in your area? If it is Vumatel, then you will have to pay them R1750 (or whatever the price is now) to install the line from the little box to your property. I am not sure about the charges from other fibre providers, but cool ideas does not cover the fibre install fees. They will however cover the activation fee on Vumatel, which is an additional R1k basically.
2. I am not technical enough here to really answer that question. I know that I have full control over my router, and all its settings.
3. From my experience, there is no FUP (having hit over 2tb a month, for 3 months in a row at one stage). There is also no shaping from my experience, and the only thing I have had a problem with is twitch streams. My routers firewall does not like twitch for some reason.
Just a quick thing, if the fibre provider is not openserve (who I believe is the only one that allows it) you can only ever have a single fibre ISP that you use.