Hey Dstoykovic,
Yes, the percentage depends a lot on how much of your trading account you will be using.
For example, if you start with 3k account and you trade 10 EAs each 0.1 is one thing, and 3k account with 10 EAs 0.5 lot is a different thing (just example).
In the second option you can gain much more with the same EAs but at the same time, you have a bigger risk.
I can not suggest you starting amount or risk, that is up to you.
If you want me to give you some tips let me know the following:
1. How much you CAN start with?
2. What risk you are willing to take?
3. Which EAs did you trade and what rules you followed to move them to separate account?
Regards,