Hey Chingi,
yes, it takes time. And it depends a lot on how much time you will spend on it.
When I started algorithmic trading with the strategy builders I was spending only few hours on Sunday to generate the EAs and leaving them for trading during the week. This was because I worked on two places and had to take care of my family.
After that I stopped one of the jobs and had 1 hour per day for it. When results came, I quit and decided to do spend the whole time on it :)
Of course this all was long time, that is why I say it depends on the time you spend on it. If you spend the whole day from the beginning, for sure you will get results faster.
Regarding the EAs, I said that the more EAs you have in your live account, you will see less difference in your monthly performance. And this is if you diversify the EAs will.
Have a wonderful weekend!