A5 question about some new wheels

Hi guys iv browsed through the internet and tried to find a few answers but theres alot of mixed anwers to be fair im looking into getting some rohana rc7 or rc10 20inch wheels the problem i have is i want 11j , will these fit or will i have problems iv seen it done but wondering if theres alot if work involved or just a matter off getting the arches rolled a bit ? I do want to lower the car a smidge once ther on , i really like the look of the 11 j , agressive concaved look these will be going on an audi a5 s line 2009 cheers shane

They only do the rc7 in 10j or 11j i would only want to lower on springs more than likely just a smidge hopefully someone will come along that has done it and verify it for me