rims can really make or break the ride (assuming looks is what you're going for in this case). but if it works for you, go for it. maybe something like
rota track-r's, i just love the way they look on sedans but just my personal opinion.
i used to think spoilers didn't look right on 4 doors but some guys can pull it off. someone mentioned earlier about the mugen spoiler which i think looks good on sedans (pics below). wouldn't touch the paint for now anyways and honestly that green is one of my favorite colors for a Civic.
as has already been said, take a look around member's rides to get some ideas. and all i can say is research. i joined a few months back with nothing to offer to the community but have already learned so much just by searching and re-searching.
build it for yourself the way you like it. and a lot of good input from everyone else. good lookin out guys