If this is going to be your first "real quilt", I'd go with some beautiful fabric and an easy pattern--maybe stars, maybe just bordered squares with sashing, etc. You say that difficult isn't a problem because you have plenty of time, but if you've never done one before, what you lack is experience. Are you an experienced seamstress? There is a world of difference between garment sewing and sewing quilts. But if you are the type who tackles the hardest first, then have fun!