I would update to a 4.84 cfw. Then install the PSN Patch plugin, this disables connection to PSN until you use a button combo to reenable it, and it makes going on PSN and playing games online safer I think, by making it so CFW are less detectable by Sony. I would have your games backed up in ISO format, load the ISO, then reenable PSN through PSN Patch and start playing. When reenable PSN it disables CFW function, so i think to do things like mount another game or go into homebrew you have to restart your system first afterwards.
If you're on multiman 4.82.00, that should be fine, but I do not use multiman, I like webman mod and IRISMAN better.