the concept of copying trades from demo to real account because the demo "does better" than the real account might be appealing at first, but it does not work (I had the same idea like you about 8 years ago when I started automatic trading). The problem with live accounts are 2 things that differ from the demo account: slippage + different feeds + injected price spikes (with ugly brokers only though!) on the live account. That´s why the live account does bad!
So if you copy the trades from the demo to the live account, the copied trades will still have the same problems on the live account. They will get slipped on the entry, they will trade on a different feed with wider spreads and slightly different pricing, the broker will also injects spikes (but just really the absolutely ugly ones do that nowadays).
Let me tell you a inside info about this since I have good connections to several brokers - with the following broker that I am talking about I had(!) a connection, not anymore because it turned out they are absolutely dishonest. To suck people in, they had a custom MT4 plugin for their demo server which would push prices into the direction the user wanted after entering the trade. E.g. if your EA opens a long order, they would slowly but surely push the price into your direction and your EA will win, making you believe you have a great working EA (which in reality was losing) and a good broker now and can now proceed to open a big live account. I don´t need to tell you that once they did go live, it all went bust for each trader:(
So even if you would use your "good" demo signal and copy it to the live account, it will not make the live account perform like the demo account because the copied trade will still suffer of slippage, slightly different feeds, price injections, etc etc. on the live account.
Your best bet is: stick with a SERIOUS and HONEST broker that does not play any tracks and forwards orders to the markets. The brokers I know that for (because they are sending me tickets of their backoffice for which LP filled which part of the order since I trade considerable lot-sizes of 150+ lots per trade) are: JFD Brokers, Global Prime, Tickmill. I could list the black-sheeps now too, but first Mr Popov doesn´t want that here and secondly they would surely sue me (again) But I think it helps to list at least the real serious brokers I know about, because newbies get ripped off left and right with the majority of the brokers out there (I have accounts with over 80 brokers and say that 75 of them are crap and cheat).
It´s kinda like the idea to reverse a losing strategy to make it a winning strategy:) I think we all also thought of that in the beginning:)