The equipment shed looks great and the proposed barn looks very nice.
With respect to the foundation I would avoid the temptation to used blocks for the walls, especially in VT. Blocks are composed of very porous material that is capable of absorbing ground water. The blocks are typically placed and secured with mortar which is susceptible to water damage. As the block and mortar are exposed to moisture and repeated freeze thaw cycles the foundation system is prone to failure. Would be a shame to construct such a nice building on such a sub-standard foundation system. If you are going to do it yourself and you aren't worried about time I would get some kind of mixer and pour a foundation. You could use ICFs for forms or construct your own from plywood. I definetly would not use blocks in this climatic region
