I am asking one simple thing :
How do I even calculate the profit I can make using YAC ?
How many coins per day ?
What is difficulty ? What is block reward ?
Nobody seems to know this.
Maybe someone with a 2600K CPU can chime in and tell us how many YAC he makes / day or something

A bit of manual hand-crafting?
You can get all that information from the client with the getmininginfo command. Then it's a matter of doing the math.
If you can't be bothered with that, simply join a pool and the pool will simplify all this and tell you the estimated YAC/day.
But to be honest, I think you are deviating the thread. This is a thread about development and technical aspects of YAC, I think it would be better if you opened another thread to ask these questions.