I think you should stick it out long enough to find another position with more responsibility, then give your two weeks notice. Maybe LTC just isn't for you. You may want to look at a hospital which will give you more variety and you will not be bored, and will have plenty of hours....and OT!
My starting rate in Boston, MA was $23hr. But depending what shift you work there is also shift differential. My classmate that graduated with me is making $25hr working the 3rd shift.
I am in Boston and it took about 6wks....after all your paperwork has gone thru, payment for testing received etc., you will receive an email stating how soon you can test. You can then schedule your own date from there assuming the date is available.