Actually, I believe it took billions of years for the Universe to be created but that's for another topic.

I'm pretty much lingering around. My posting had decreased dramatically due to other Seminary commitments. But I enjoy posting in the religious section.
But back to topic
If one believes in predestination or that God elects those in whom God gives grace to, that would not take away a sense of omniscient. Also, if one has free will, that does not take away from God's omniscient attributes either.
Hundreds of documents and dozens of official confessions from both Free Will churches and Reformed Churches (Predestination) believes that God is omniscient.
The Free will types of churches (Some Anabaptist, Dodrecht, MCC, AG, Baptists) believes that we have free will through a conversion experience and holds onto the belief that God is omniscient.
Predestination or elect churches (confessions of Trent, Lutherans, Augsberg confession, 2nd Helvetic, Westminster, and Heidelberg) believes that God presents grace to us and there is no form of conversion that will earn it to us. God simply gives it to us. These churches also believe God is omniscient.
A being can give someone free will and still know the outcome of everything and know everything there is to know. Free will doesn't put place blinders on an omniscient God. Also, predestination does not either.
Free will in terms to "salvation" simply means God gives you the decision...purely your decision, on whether or not to follow God. In the end God does know what decision the person will make but it will not be through the efforts of God making the decision for the person. Hence, Omniscient is still available and free will is still practiced.
The same is true for predestination. Just because God gives you the choice freely without you trying to earn it, does not take away from God's omniscience.