Trust me, forget feeling homesick - when you get home you'll kick yourself for giving it a moments thought while you were in paradise. Plenty of time to be LOS sick when you're back home, but there's not enough time in LOS to be homesick!
Also know that first trips rarely live up to our expectations, and the whole learning curve can be a real bitch. 2nd and 3rd trips are when it starts to get REALLY fun!