for day one it may be a little high but it in and of itself isn't too high.
how much black colored material was on your LR
when you got it? If there was a lot you should scrub some of the black material off (black usualy = dead)
did you add anything to the tank (such as a shrimp) to kick start the ammonia? if you did, you can remove it if the ammonia starts to sky rocket.
I would tweak your thermostat up to 80.
keep testing, be patient... it's a long road but we're here to help.