You see the most Arabs in Tel Aviv, that is where you see the most of them walking around, at least that is how it was for me. We wanted to go see Haifa but it was a four hour drive from where we were so basically you have to make a day out of it..or if your planning on staying a few days to rent an Apt so we skipped it. My Mom and most of my family were born and raised in Israel so they are already familiar with the areas, it was more for me and my sister who were too young to remember what Israel looked like so we toured some of the areas
Best Wishes!