iRules seem to be processing out of order.

When you have multiple iRules with the SAME event in them, then they are all merged to form a single event processing cycle. I would not use this as a recommended approach because this requires more coordination of logic between the rules. If you want to use common code, then create a TCL proc and then invoke this proc from an iRule. The other alternative is to set state variables "set i_did_action_1" and then check for this variable in a different irule and re-act accordingly. The downside to this is that it wastes TMM memory.