So far as the termination fee goes, if Hughes finds that you are receiving the 25 down and 3 up I don't know why you would expect to avoid an early termination fee (it's a contract, and contracts are usually severable, meaning that if one portion is found to be unenforcable (e.g. the termination fee for phone, if applicable) the remainder of the contract can still be enforced (e.g. the termination fee for internet services rendered across the 24 month period)).
On a different note, there are services out there (my parents use grasshopper for their business) that will allow you to add extensions and alternate DNIS's (TO addresses) for a fraction of the cost of two accounts for two separate sets of VOIP equipment so that you can port both lines.
I hope this helps!
