I guess this is a pretty simple question, but before I go ahead and do this I want to make sure I know what I'm talking about.
I have a BTC wallet on a computer and wish to remove it (completely, as in uninstall it,) and back up my bitcoins to 3 usb drives (I will keep a few on my phone, but the rest of my coins I want stored offline and to be unavailable.)
When I go to my wallet there's a "back up wallet" option under file, which once initiated leaves a .dat file on my desktop. Now what I want to know is, is that .dat file a full back up of my bitcoins? In other words, if I put that .dat file on my usb keys, can I then uninstall my wallet completely and be able to recover my bitcoins in the future from my usb keys? Also, if someone stole my computer, would they be able to somehow re-install my wallet and have access to my bitcoins? My goal is to hide my coins and permanently make them unavailable from my computer. Am I missing something here? Please confirm. Thanks in advance!!!