Yes you can create a new account.
Yes that's a decent deal. It's £299.99 for the console at RRP, though you usually find it £20 to £30 cheaper if you shop around. By the time you add games on though, it is usually a false economy. I know you've mentioned MGS in the past, and FIFA. Best price I can find for FIFA is £32.99, so we're already up, and £30 for MGS.
Last of Us will almost certainly be a download code, but it's one of the best games I've ever played, and worth playing again if you played it on PS3.