For fake package games (PS4), is there a source where I can find game covers and backgrounds, or am I going to have to put them together myself?

Also, am I good to play on my main account? I can't connect to PSN, but I can still connect to the internet. My trophies won't sync without a PSN connection, right? If they were to sync, would Sony think that as being dishonorabru and command my account to commit seppuku?