Start with quilting a table runner to get a feel for how to quilt on your machine. There are a couple of ways to quilt. Straight or slightly curved lines with a walking foot and the feed dogs moving the quilt. Free motion quilting with your darning or hopping foot. The FMQ is usually done with the feed dogs down and you control the stitch length by how fast you move the sandwich and the speed of your machine. Which method do you plan to use?
A lower loft batt is generally easier to maneuver through a domestic sewing machine. Find a thread that works well in your machine and try out some practice samples to set your tension set if you are trying FMQing.