I have replaced all the fixed portlights on my 413, but the only replacement that I have accomplished on your list is the aft cabin
hatch. I took my old broken
hatch to a plastics fabricator in Jax, Fl. and he made me a beautiful copy in a dark polycarbonate. Look at samples of the work done by someone in your area. There are a lot of skilled people who can replicate these forms. 'take care and joy, Aythya crew