shells and silos. FB are not a necessity. If buying new, my rule of thumb was not to spend over 20 each on a FB and not to spend over 10 each on shells. Its tough to do, but those kida deels can be had. Used, I like to be around 15 each for a FB depending on condition, and shells is kinda up in the air. Got all my stuff off craigslist and ebay. some new, most used.
If I had it to do all over again, I would go with more silos and add FB's in latter. V boards are a great way to add bulk and visability to your spread and still keep the transport-ability.....is that a word....fairly simple.
Theres always someone out there thats better then you. I'm that guy.