That's not a bad idea, teams don't usually trade with each other until June at the earliest though so you could keep it on manual until then. I think you are going to notice a lot of trades start to pop up in May. I think that's a bit unrealistic, teams don't start trading that early.
I've got a question, I have instant trades off and since I've already started my franchise there is no way for me to fix it. If I want to go fix a trade I have to wait two days right? I can't just go fix a trade the same day can I?