We're not a dedicated PvP fleet but we do hold PvP events and do get together otherwise for PvP.
We also satisfy the 4 points you raise - in our case we use TeamSpeak 3, you're welcome to hop on any time @ ts.ufplanets.com port 9987.
I just wanted to take the time to let you know about Shadow Dragon Fleet. We offer 110% percent support to our members; We have a fully functioning website (www.shadowdragonfleet.webs.com) and a ventrilo server. We buy are players any equipment they need, we offer training to all of our members (our academy is run by experienced gamers who have MMO experience and have real life tactical experience and also role play experience) We are casual, knowledgeable, dedicated, very friendly, willing to lend a hand and assist the player in any way possible and we have skilled players that participate in pve and pvp. Shadow Dragon Fleet is also allied with other powerful fleets. opportunities are given to those who work hard. We also have higher positions available so there is plenty of room for advancement, and we cover all aspects of the game.
If you have any questions about the fleet feel free to send me a message here, or you can contact me through our site.
I believe the 501st may be something your looking for in terms of all your conditions. We are a very active STO group. We only dedicate ourselves to this game. Others play a few other games but mostly we are on this
We are very into pvp, and currently starting a pvp squad in the fleet. We offer ventrilo, which is not only great for pvp but for stf's to, which we run alot, with our allied fleet (Sinister Swarm).
If you have any questions please give me a shout. I hope to hear from you.