you are slightly confused on your terminology of the hubs - superhub - hub - modem/router they all refer to the same thing - the differences are that over the years the release number has increased and older models are no longer issued - but apart from the hub1 there are examples of all the others in use
to add to that different hubs needed for different speeds
all that apart to get to your question - yes its possible to have 2 inputs and therefor 2 hubs but achieving that with the way CS see things may proce difficult to impossible - the computer [usually] says no so moving that forward is a large boulder up a very steep hill
any account must be the named occupant paid from a bank account at the registered address afaik - so that confuses things even more
surely the easy answer is just to upgrade what you have now to the high speed you want - unfortantaly that will not be seen as a new user so it wont be the cheapest deal but certainly the easiest to get into the heads of the script readers offshore - it would still be in your name - it has to be and you would have to get your employer to pay you - again afaik thats the only option
