Wouldn't it be easier to use somebody else's internet connection and you taking your console around to their place [it would need to be a ADSL or ADSL+ connection], starting a PSN account [it's free] and for you to have pre bought a PSN card to the value that you need to buy the game from the store?
Trying to get a Disc version of HD/FURY is pretty hard, they were only sold by one store in Australia when released [JB HiFi ] and not for very long at that, also from the reports at the forum from those who bought it, the game is quite a bit slower to load and there were some other problems with it in comparison to the download version.
Also, if you went about getting the download version, once downloaded and installed, and still connected to the internet, you could go to the online portion of the game and get the latest of the games software updates.
Maybe try a Internet Cafe near your area and ask them if you could briefly do it from there.