My iMac is slow and buggy and I'd like to do a clean install. I've already downloaded a copy of Yosemite to a bootable thumb drive. Once I do the clean install, what is the best way to re-install my applications and mail/docs/pics ect... I have cloned copy of my hard drive using SuperDuper. I'd like my new system to be like new but with my old apps/documents. Is there an easy way to use Migration Assistant or do I have to reinstall all the old apps one at a time?