Answers

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

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.