Al, if this is anything like the Mk IV then it should build into a real beauty. As you said, it won't be a quick build...I've seen quite a few of the Bronco Humbers started, not so many completed
The weapons sprue should be Fb if you want to check your instructions parts layout to see if it's included in this one. I'm sure at least a few of the sprues are shared with the previous releases, so some of the detail parts probably can be found in the Mk IV review.