Load balancing + simple queues

Hello all.
i tried to configure load balance and simple queues in a same PC.
each separately works well but i have a problem with mangling the traffic.
I want to do is mark connections of the “know traffic (http,pop3,dns,etc)” and all “unknow traffic” is queued.
After that, I want to make “load_balance_persistent”
as I said before my problem is that it is not exactly like I can separate the two processes to mark connections appropriately .

can anyone hepl me?

Thanks!