Hi! We are considering using Dropbox as a virtual computer and get rid of our ancient PC. We'll be working directly from Dropbox. Not sure what plan we need yet. We have 5 people total that will access the same files. Only one will be actually modifying the files on the fly (for graphics). One of the computers that will have access to the account will be used for Quickbooks backups. Not running the program from Dropbox, but just the automatic backups. Has anyone had experience with this and does it work seamlessly? Also, I see no need for a multiple user account unless someone has other info I should know. I've experienced using Dropbox Plus where I can sign in at the same time as the owner of the plan... is there a limit to how many can sign in at the same time? Thanks in advance for any info!