Girl you are about to have your first love affair!! With a machine!! I had the Janome 6500 and loved it and traded it in for the Horizon and fell more in love. That machine is such a workhorse!
The only thing I will recommend is to keep it clean around the bobbin area. Keep a little cheap art brush by your machine and brush around the top of the needle once in awhile and keep the oil hole in the bottom of the bobbin carrier full. For me I add a drop at least once a week and if I am sewing every day twice a week. Also, remove the bobbin plate and the bobbin carrier and brush out the lint. This will keep your machine running smoothly. Congratulation - you are a lucky gal!!!