Due to their size, you need to consider that a lot of the stuff you use for a regular sized horse will need to be much bigger to accommodate the size of a Clydesdale. This includes your trailer, your tack, your corrals, and your feed bill.
Budweiser has made the bay Clydesdale color very popular. Clydesdale horses can be black, bay, gray, roan and even chestnut. They almost always have white on their faces and legs.