DH & I have decided we want to build our own pergola. A very budget, non-fancy small-ish pergola. We thought, as it’s going in a corner so to speak, we’d only need the one post in the outer corner as support, the fencing being the other support, if you know what I mean. What type of wood is best used for this? Any tips? It’s to fit a space no larger than 6x6 ft.