Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
I hope I'm not too late, but I just gotta ask, do you have your Feebas also with HA or if you don't, do you think it's fair to trade the Sneasel instead? I'm still looking for ways to increase my Dream Ball HA collection (turns out I only have non-HA Feebas. ;_; )