for me aftermarket rims on stock ride height has never really done it for me but that's just me, similarly if your engine is never going to be mapped I wouldn't bother sticking any other hardware on it but would invest in the suspension department
springs wise i always thought the H&Rs were then were on mk5s sat too low at the back, everyone one i've seen on eibachs looked spot on, i had a set put on my rocco to sell it and they were great in terms of ride but didn't transform handling, for me the VWR route doesn't give value for money these days and only a few dealers offer their product with a warranty but you pay a hefty premium for the privilege
for me i'd go down the Bilstein B12 kit route as you will notice the difference and forget the rest, you'll have a greater looking stock car which is more fun to drive
i know out of our Pirelli and the Ed35 which is the better handling as a result of B16 Pss10