Hi, I fancy getting some good polish/wax and maybe a snow foam attachment for my karcher pressure washer, any reccomendations on what to get?

Car is freshly painted white if that makes any odds, I hear poorboys is good?

I'm completely clueless as to what I need and whats good, I usually use meguiars...

Whats good for bringing up black plastic like mirror surrounds/door handles?

Dont want to spend hundreds, and dont want it to be concourse! just very shiny with a nice deep finnish


Thanks.