about the saran wrap. you don't have to cut one long stretch. if you lay it out on your table, and wrap the ends around the edges of the table, you (i) slide the book underneath and trace with a permanent marker. keep sliding and marking. when you lay it out, choose a table-top in your comfort zone. have some help you while you lift both ends at once and lay it right on the quilt. the wrap wants to stay there from static electricity, but pin, pin, pin. then do the next run. mark where you left off the previous run and continue from there. it sound complicated but it's not. try it on a small one if you want to. the wrap pulls right out when you're done.
did you try that website link and look up the border prices?
p.s. if the book is too bulky, you can trace off the book onto a flat paper and then trace off the paper onto the wrap.