Will this be ok to do?

I have a 10 gallon tropical fish tank and right not I have 3 Zebra Danios. I wanted to add some guppies to make it colorful but I was wondering do you think the Danios will fin nip the Guppies since they're not in a group of 6? I know the biggest Danio likes to chase around the other two little ones, so I guess he would be the boss of the tank. Do you think adding 2 or 3 guppies to my tank would be a bad idea?