ER experience whether at a rural facility or not would be invaluable to you. Crazy things happen even out in the middle of nowhere and you would be gaining experience that could take you into any other department. One year is all you need. I would definitely take it and if you leave in a year, then don't worry about it, unless you sign a contract that obligates you longer than that (one year should be enough). A long term care facility would not give you the experience that 1 yr in an ER would.