The thing is I won't be using Bitcoin on my computer to sell, so I don't need to keep it on there at all. Maybe in a year or so (who knows) I'll want to load up my wallet and sell.

I just want to remove it and then restore it later.

My question is:

To do this, do I just need to re-install Bitcoin-Qt, let it sync, shut it down, and then overwrite the wallet.dat with my back up from my external drive? When I turn Bitcoin-Qt back on, will I see my wallet and be able to sell/sent?