Glad to see this post. A friend of mine and I are getting ready to do the exact same thing to her quilt. Pretty quilt.

What a pretty quilt. Add length or width as you wish. The binding will bring it all together and give it that finished look.

I like to see how the quilt will look on the bed. We seldom see the entire quilt layed out flat. For most quilts a nice border (drape) on the sides and bottom looks balanced because pillows etc. come into play on the top. If this quilt is specifically for a bunk, there probably isn't much drape on the bottom or top, so a nice border on the side that shows as it hangs over the mattress would look nice.