Hows things, thats a sweet looking RS200 you have, looks like the suspension is sorted already, Exhaust seems like its more for looks than performance so you could get more out of it with a different layout. Having it that low on Irish roads isnt good, maybe try stiffen the suspension, anti roll bars. My Rs is fairly heavy on juice so more mods means even less mpg. I wouldnt fancy carrying any more than 4 people with it that low, mine is lowered 15mm and gets a lot of knocks going over ramps! It might be worth while getting it tuned in England they seem to have a better selection of places.
Where abouts are you based? from the looks of it, country somwhere if not we should meet up in Dublin