Machine quilting thread can vary by the brand you use. I often use a Metallic Needle 80/12, straight 90/14 or a Top Stitch 80/12. The top stitch and metellac are a smaller needle with a big eye. I like these as they don't leave a big puncture hold like a regular 14 or 16 will. Breaking the needle could come from not moving fast enough for the speed you are running or some thread nest somewhere in the bobbin area. If you can run your machine at a lower speed, try that until you get better coordinated. I am sure your FM stitches are just fine. I bet I have practiced for 4 years and this year is my first to FM on something I don't want to wreck and it turned out quite alright. If you can buy a stitch control for your machine, you are lucky but they aren't really necessary. You will surprise yourself real soon when that day everything comes together.
Good luck and show us some pictures of your progress.