I would plan about 20 quilts and sell the rest--depending, of course, on how long it takes you to make one quilt. How's your health? how many quilts have you been making lately per year? Do you see yourself going strong for another 10 years (realistically), or is your eyesight failing, energy waning, interest going by the wayside?
There is one lady well into her 80s who still helps make lap quilts for us to give away. I'm soo grateful for her work. As far as I know, her health is good and I think she's at least 85.
But please...why not offer it here..you will get more money and people all over the world can buy it! :)