I would not recommend lacquering the rims, they are not steel so will not rust. Lacquer can yellow over time too.
Corrosion is minimal, just use a bit of autosol now and again to keep it shiny.
Not a complicated job but maybe just a time consuming one to get that highly polished look. My wheels & bits of the engine are rubbed down and polished & look good I think. To get them looking like mirrors it will take time though.