will the ardu be able to just read the first part of the sentance and not get confused with the values behind it?
Yes, you can code it to look for $ and grab characters afterwards until it sees a comma.
LCD displays are very commonly attached to Arduinos, search the forums/playground and you'll find plenty of examples. Probably more use to you than just the led display. Then you can show the entire sentence. Might need some button logic to hold each one so you can read it before grabbing another.