OZ alloys are out of my league I'm afraid 
Plus, I've been comparing our cars and it seems like I'm copying yours! (Not on purpose mind you! 
) We both have a 5dr Red GTI DSG, R32 rear end, OSIR front spoiler, TwinTake etc etc etc 
Completely agree with you about the handling mods. Which handling mods would you recommend and in which order?
....Any similarity between our cars I see as just two people who both have excellent taste!
Handling mods? - Hmm, depends on how much you want to spend and how you use your car. Anti-roll bars are a good start, especially if used with KoniFSD dampers and the appropriate springs for them. The FSD's don't lower the car much but they are S.M.A.R.T. and automatically adjust so they're either slightly stiffer or slightly more comfy but according to road surface conditions. I had a very early set which failed but Koni have revised their design.
Sy would argue that ARB's don't help you corner any faster and he may be right, but you sure do feel better planted and hence more confident.
Stiffer but lowering springs are popular. Coilovers such as KW or Bilstein are excellent for harder driving and trackday use but come at a cost similar to OZ alloys. WALK helps too. There are plenty of discussion threads here about various solutions.
I'd advise thinking ahead as far as possible about what you want to achieve - There isn't a duty to do hardcore mods on this forum! Suspension is a whole package and a sum of its components. Proper alignment and setup also play an important part.
The downside of remapping is that the extra performance highlights where else you can modify. Once you have suspension mods you realise that some extra braking power may come in useful - Slow in, fast out of corners/roundabouts. You know the saying: It's a very slippery slope!
