To this end, what would the position limit impact of quoting both sides equally be? What if I didn't enter the quotes simultaneously? Would I start +/- 1 and then go back to even when I got the other side in?Most FCMs just follow the risk side as it is given to them by the data feed providers. They dont deviate
Keep in mind that Limit orders that are liquidating orders should not count towards margins. When it comes to Limits, always consider whether its a new position or not. So for example, long position with an OCO of Stop and Limit, should not take more margins. Both are liquidating orders.