looks like the only breather mod you haven't got is the plenum spacer. S once you buy and fit that you're pretty much done with power mods unless you want to get into serious money like supercharging and forged internals.
You could stance it for pretty cheap compared to uber power mods. Couple grand for bags plus whatever wheels you want. They could cost a grand for some Rota's or £3k for some Volks, up to you. Whereas a S/C kit will cost over £3k plus other supporting mods, fitting, tuning etc, there's probably £7k right there and you can add another £5k to that if you want forged internals.
I think there is a happy medium, which is what I'm going for. Max out the breather mods, make it look good but not silly VAG stanced, and update all the suspension and possibly brakes to make it feel good. So it'll look good, go good and feel good.