If the amount of fabric is "not quite enough" - one can always put a contrasting band/strip - or band/strips - to make it look like it was a design choice.
I had - at one time - assumed that all quilting type fabrics were 45 inches wide. I had this top that was about 84 inches wide - should have been plenty. WRONG! That's when I learned about adding strips to make it look like this was what I had really wanted to do all the time anyway!