Extremely interesting team, in my own decidedly imperfect opinion. It does look very promising.
Personally, however, I wouldn't waste two whole spots just to take advantage of other weather teams. At least one, but probably both will be wasted and they'll be hugely outnumbered anyway, not to mention their lack of synergy with the rest of the team.
An odd consideration, if you truly despise other weather teams, is Gardevoir. With Trace and a Scarf, it can outrun pretty much every weather abuser going, including most Excadrill, before KOing with super effective moves or STAB Psychic, which also helps deal with your slight fighting type problem (looks like you'd have trouble taking the powerful Mach Punches and Hi Jump Kicks running around nowadays).
This would then free up a whole slot on you're squad for something else. Personally, I'd recommend of Clorophyll Venusaur for the extra sweeping potential.
Or perhaps a rapid spinner in this slot, like Claydol (who appreciates the reduced water weakness) or, and I truly wouldn't use it, Torkoal. Either way, you do seem to need a Rapid Spinner, so maybe replace Leafeon or Sawsbuck.
Finally, I'd make Ninetails either bulkier or faster (Timid) or maybe both. Without Nasty Plot Ninetails isn't really powerful enough to merit Modest, but truly does need the speed and/or bulk to repeatedly bring down the status and sun.
Apart from that, this team looks very promising. I love the moveset on tails, Volcarona is always an excellent choice and the overall concept is good, it just needs fine tuning.
On Volorana, use Morning sun over rest so you can have either a life orb or leftovers, in sun morning sun heals 3/4s health :)
Woah...didn't expect to see this team jump back into the spotlight. Thought people would check out the other one I put up
shameless plug is shameless.
Well, that does encourage me to actually try and rebuild this team. :3
Wiil, check your PMs :-p