Answers

Not a difficult job at all. Depending on the details it can be done in a half a day. More details - more time.

The difficulty depends on many things.

I would say PT post is the way to go, but install it over a post standoff past so water doesnt get trapped between the bottom of the post and whatever it is sitting on causing premature rot.

WE concur with Jeff and Jason although as a company we LOVE none wood decorative posts or engineered productrs. We are in the SOUTH.