If enemy forces moves are interspersed between your own, I think it's harder, but possible.
I'd say the best solution would be to "group" your initiative, that way you could all act simultaneously. Essentially:
Joe, Jane, John and Jim act on 10, 11, 12, 13. If enemies are between them, they hold their turn until the initive is Enemy, Enemy, Enemy, PC, PC, PC, PC.
Then they all effectively declare their movement simultaneously, then take their actions by their initiative order.
This is how I run "squads" of NPCs, and one reason my games are particularly brutal. Having 4 trained opponents act in synch is incredibly powerful, but if the players do the same, it works out.