First of all, welcome to Smogon!
Second of all, the
Strategy Dex lists what we believe to be the optimal sets for every Eeveelution.
Third of all, the Eeveelutions don't exactly have the best synergy out there. One one (Leafeon) is resistant to Earthquake, for instance. A team made of only Eeveelutions will be very predictable.
Fourth of all, this is Orange Islands, the
only part of Smogon not associated with competitive battling. This thread is thus quite out of place. I'm going to hang one of those fluffy little padlocks on it.