i agree, connecting threads has nice kits..
http://www.connectingthreads.com/Quilting.cfm
i made a tree skirt out of a kit from thre a few years ago.
they are very generous with thier fabrics in kits..(for errors! lol)
i would start there. usually they have a color fabric guide with it,
to help you know which fabrics get cut to that spec.
free shipping if you spend $50.00
thier thread is great too.