P3K10'S PROFILE

I am making a custom battle system and need help in deciding how to order the turns out of the heros and the enemies. I don't want it to be ATB based, just whoever has the highest speed, second highest, third highest and so on.

So an example would be Hero1 has a bigger speed than Enemy1 but Hero 1 has a lower speed than Hero2. This would mean that Hero1 goes before Enemy1 but there is now a decision to make out of Enemy1 and Hero2. I just want to make a system that can do this calculation. I have 3 Hero's and 6 enemies. If somebody could just get me started i would really appreciate it. Thanx :D