To make a long story short ,my daughter and I attended a local rocket launch back in June ,she/we loved it We have since built two Estes rockets,they didn't look so great by they went straight up and down ,so all good. I now have just bought a two -stage rocket named Galaxy . My first question is,is the white glue Elmers she uses at school ok for this and if not what should I use ? I also know to use finer and finer sandpaper as I go along but what is the proper grit I should start with.Thanks and if you have tips that aren't in the instructions please let me know.Thanks