Recording from vinyl.

This has probably been done to death on other posts but here goes.
I have double LP of The Story of the Who, it has been played just three times since i first got it in the mid 70's. They were all made to tape and long since gone. I want to make a digital recording to put on my USB stick for use in my car. I will be making the recording on my Mac with Audacity. The actual connection from turntable to Mac is not that easy in that i have to get a USB to Phono adapter, thats on it's way.
I know that the recording may well sound bad as there will be all kinds of noise picked up, this can be cleaned in Audacity though i am not sure what the end results will be like. I have done this on a PC with excellent results.
What i would like the know is whats the best bit rate to use, i'm not worried about size of files as i will convert the files later to MP3 for ease of use.