It's not a bad idea, but there are a few things to keep in mind, at least things I would tell myself if I wasn't me...or something.
I personally find that alot of the "straight" type blends have a much more subtle and delicate flavor profile. It can take some extra effort and time before I can really feel like I am actually tasting the tobacco, especially if I'm not sure what exactly to look for or expect to begin with. Don't be surprised if you feel like you aren't getting much in the way of flavor at first. It may take a little longer than you might expect and you may have to do some extra experimentation with prep, pack, pipe, etc before you start to really be able to experience the flavor from something like FVF, BBF, or Union Square.
Another thing to remember is that age can dramatically effect a tobacco, Virginias being probably the most commonly noted example. If I were advising myself again, I would probably suggest trying to track down both aged and fresh tins of whichever particular tobacco I was trying out in order to perhaps have some idea of how it changes (and often improves) with some time. I personally have no qualms about paying an extra buck or two, or padding my side of a trade A little bit more in order to get tobacco with some age on it.