Can an officer arrest you for Dui/drugs just by simply looking at your eyes and not doing a field sobriety test?

You can be charged with anything. The question is always, can they prove it. Based on the facts you stated, an experienced criminal defense...

Will i lose my license?

No. The 12 month hard suspension occurs as a result of the administrative license suspension hearing, not the criminal aspect of the case.

A good rule if thumb is that unless your lawyer specifically tells you that you don't have to appear in court then you need to be there.

I received a bench warrant can I turn myself in and ask to court for payment arrangements. I have 80% of fine.

Hire a lawyer and you probably won't have to go to jail at all.

What is the average mean in terms of time given for drug & theft charges?

There are too many variables to answer that question. For example: what kind of drugs, how much drugs, what was stolen, what was it worth, how...

There was a felony forgery warrent issued in 2002 while i was already in custody for other offenses

While you may have a defense to being prosecuted the warrant will not be "quashed" automatically.

How can I get charge of loitering and possession of marijuana less than an once dropped it was not found on me I was in backseat

If you have any hopes of joining the army and keeping a clean record you need to hire a lawyer. You, yourself cannot get these charges dismissed....

I have a warrant for probation violation. My son's father is going to establish paternity soon in family court. Will my warrant

Probably. You need to hire a lawyer to help you resolve the probation warrant.

You need to make probation your number one priority or you will go to jail.

My boyfriend is scheduled for trial-jury this month. Is it too late to hire an attorney or can he restart the trial?

It is not too late.