Before you commit to a full quilt, you need to like the process of working the Gardens by hand. Plan your Centers, (one color? or varied?);
your Inner (first) Circle of 6 (solid? multicolor? random?); your Outer Circle of 12 (contrasting? solid or tone on tone? floral?). Experiment first.
Make up three or four gardens, and decide on your "Garden Path". At this point, either you like your work or you can drop it. I strongly advise making up a few Garden blocks at a time--NOT cutting thousands of hexagons before stitching.