Hi GL,
Congrats with the car. wine (again)
My 2p worth on your questions, dont worry about being unadventurous with the colors, it is a trad looking car that goes very well with classic color combinations. I often see more "frivolous" combinations and always think it takes away some of the charm. The sport color options are spot-on imho. Ref the tread rubbers, I have had the double on my plus4 and nothing on my Roadster. I am very happy I left them off. Clean look as you say but also because they trap water and grit, its difficult to clean and wax the sills and they dont actually do anything. I find any shoe marks appear further out on the rounding. Protecting the paint on the sills can be done with 3M foil.
Cheers J