Congratulations on your finish. I think it looks great and the size is definitely manageable on the regular machine. Now you have to think about thread color as you are dealing with contrasting fabric. If you do any quilting on the pieces, your thread will not show on those pieces where the thread matches and show on those where it doesn't match. You could use a monofilament (clear) thread and it wouldn't show but that is a bit of a tricky thread to start your journey.
I would use a beige/tan thread and do a careful Stich in the Ditch. It will give you the experience of quilting and you have the seams to guide you. To clarify on SID, you don't start the seam in the center of the quilt, rather in the middle row on the edge.
Good luck YOU GOT THIS!