So this is where I was this morning....
When I am done with the border this quilt should measure 70" x 86".
I have found that I do not like opening the seams. I would much rather just flip the seam to one side besides I think it gives the quilt more strength.
What I did learn about open seams is that is goes a lot easier if you set your seam first before you iron them open. Here is a nice tutorial on setting your seams over at Sew Moma sew.