good advice here so far.
But, let me get this straight, This is your back up bike and it's a hybrid right? Meaning:it's a bike you don't ride much if at all and it doesn't do anything all that well except to exist as a bicycle shaped object.
Sounds like you have the itch to get your hands greasy and you need a project bike. Start one! That or put the money into your daily rider, or save your money for the next bike. Joytech hubs? Sure, yeah, they are fine for the intended purpose...an unridden hybrid bike.