Thanks all.
I'll try and get the stitching finished today and do a trial hang in the back yard, the screw eyes are already there in the posts as the tadpole likes to snuggle in the cheap Coleman and I put screw-eyes everywhere.
The tadpole is petite and around 1700tall, I couldn't even fit into the cheap Coleman without being bent like a banana, I'm hoping that 13' will be long enough in the 1500mm wide fabric