First of all i wish to congragulate you, i dont know many people at all that have fire teams....
Okay (cracks knuckles) not to toot my own horn but i am a fire master, loved fire type since i first played pokemon... i would greatly suggest a fully EV'd Arcanine in speed, give it good moves like Extreme speed, fire and thunder fang (good for flinching) and mabye something like bite or will-o-wisp. My fire team is based on this guy... Next you should go for a Typlosion, raise it in sp Attack as it can pwn with Eruption, but if your going for physical roll out can be a good advantage. Last get a Magmortar. Im here to tell you this is the heart of the team, Thunder punch, fire blast, sunny day and something like will-o-wisp or toxic will make him one of your most feared... I might suggest a Houndoom but i dont acually know much on them... If you want more good ideas just PM me. Good luck. (mabye when your team is up we can battle fire vs fire ;) )