Raising a trilingual child?

speak to him in each (not in the same sentence tho of course, separately.) he will learn all of them well since he is so well. i have friends from europe who's parents spoke polish, russian, german, Ukrainian, and english, and the two kids learned all five at home equally and fluently well. don't see the harm. there wont be any communication issues since the human brain at that age can shift thru languages easily and effectively. hope all goes well!