1st question: Have you ever ridden a motorcycle before? Offroad?
2nd question: Are you licensed?
If you haven't ridden before - NO Even if you have a temp permit to ride, I personally wouldn't do it. Trailer it home and put it in the garage. (rent one from uhaul for $25.00).
The bad thing about riding without knowing how is that it is dangerous to you and others around you. If not licensed, it's against the law - You want to see insurance rates go up - get caught doing that if they even allow you to be licensed at that point. You will pick up bad riding habits early.
When you go to the MSF course, everyone learns at different paces. We had old guys and young kids in our group. If you don't take it seriously and acutally study the material given to you the classroom like any other class it will be challenging. The road course is a matter of repetition. The better your instructor is and how much you can adapt and learn from will determine how you will do as the instructors will give you input on how to be successful. If given the choice of a full weekend vs two weekends, take the two weekend version. My reasoning for this is for you to soak in the information and imagine in your mind what it takes to ride based on what you learned that day. It is a proven fact in sports that this method works. Watch the ball to the bat and take a nice and even cut - hit the ball! For motorcycling it's doing your pre-ride, safety gear check and starting your engine properly with your bike in neutral - checking to see if it is in neutral manually by rolling the bike and pulling the clutch in prior to firing up the bike. Riding the bike and snaping your head in the direction you want to turn and looking through the turn. These concepts and more will be learned.
If you are a good driver, cautious, aware of your surroundings, drive defensively - you will probably ride your bike the same way. If you hit things and crash often - you probably will do the same thing only instead of the sheet metal, it will be your body.