Don't move AppData. Use Windows Disk Clean-up and clean up system files. Use CCleaner to clean up your system. If you move AppData directory you're likely to give yourself more problems than a lack of disk space.
I've never thought about moving that particular folder though I'd think there is a risk of some programs not working after doing that. However, how much of a crunch are we facing here: how big is your drive and how little space is left?
Don't move AppData. Use Windows Disk Clean-up and clean up system files. Use CCleaner to clean up your system. If you move AppData directory you're likely to give yourself more problems than a lack of disk space.
okay thanks for the advice, I have 60GB left on my SSD & the appdata amounts to around 9GB
If you've updated Windows 7 to Windows 10 and have no intention of going back you might be able to delete you previous install backup through Windows Disk Clean-up.