I would like your opinion on this.
Almost three years ago we had an altercation at my parents house for my brother's college graduation party. At about 1am an individual came into the house, intoxicated, and started telling people to f off and was somewhat beligerant. I stopped him and tried to make friendly conversation, asking him where he went to school. He replied "I'm in rehab, I'm down here for father's day" I immediately told him to leave and he did. I was approached by a female at the party who said he was making her uncomfortable and that I should call the police. I tried on my cell phone and got no reception so I let it go. About 5 minutes later he came back in and walked through the basement again. I said "that's it, I told you to leave now I'm calling the cops" He replied "You'll be in your f-ing grave before the cops get here" I yelled for my brother to come over and asked him if he knew the guy. He didn't and also told him to get out. The guy jumped up in my brothers face and told him to f-off. He then grabbed a beer bottle and tried to swing it at my brother. I had a beer in my hand and swung it at his hand. Both bottles collided and we fell to the floor as he was swinging at me. He got up with a large laceration on his face. Others jumped in and grabbed him and threw him outside. My brother and others went outside and stopped him and told him we need to get him to a hospital. We had two girls drive him to the nearest hospital where he received numerous stitches.
About 6 mos later I was charged with 2nd degree assault, a misdemeanor. 4 days prior to trial, my charges were indicted by a grand jury and now I am facing 1st degree assault. Case is about 3 weeks away.
Here's where his story differs. He said he was trying to leave and I grabbed him arm and hit him with a sharp object. It was obviously a beer bottle.
The lead witness in the case told investigators that he picked up a bottle and swung it at my brother, after pushing him, and that I hit him over the head "in defense of his brother"
Now, my attorney feels that this is a very winnable case but that he is going to see what the prosecution wants to offer as a plea bargain.
I don't know what to do. Should I go to trial or just plea out to something. If I go to trial I will probably face jail time if guilty I would imagine.
The guy has a criminal record and we have a statement from his friend who drove him to the party. In his statement he says they were kicked out of a previous party that night because he tried to start another fight.
What do you guys think?

