Theme archive is 5.5Mb + additional plugins (up to 50Mb in total depending on what of bundled plugins you decide to use). So, if your disk space is full we would recommend you attentively check all the files that you use there or maybe archives that you uploaded. Remove all the unnecessary files and archives that you probably have on your FTP.
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.