I wanted to let you all know that I tried the spray basting and love it!
I was concerned that spraying in the house would cause issues for my asthmatic hubby, and for the parrot. So, despite sub zero temps, I hung it over the porch rail, held my nose behind my elbow and sprayed away! As soon as it was sprayed, I carried it indoors, and it worked just fine.
One issue I did have was getting the 2 fabric layers smooth. I would do the top, it would look great, then try to layer the back, and it would look great - til I flipped it over and looked at the top, which had become all bunched! Finally my hubby came up with the idea of just patting it down, instead of trying to smooth it, and that worked!
Thanks for all the help, everyone.