In the MSF course I took they would not allow a bike larger than 500cc so you may not be allowed to use yours. There was one guy in our class who decided to use his new 500cc cruiser , cant remeber the type it was. 10 minutes into the riding course, just doing the power walk from one end of the lot to the other and turning around again, he dropped his bike during the walking turn around, the lot was on a little slant downhill at that point and his bike was a little too heavy for him to handle like the gz250s and nighthawks the rest of us had. On the next day he was riding a course bike.
Don’t try and use your bike unless you are not concerned about dropping it…you will be doing tight turns and things you are not used to. You probably will not drop your bike, or a course bike for that matter, but why risk hurting yours.