Focus ST Line mods/upgrades

Hi all, awaiting delivery of my recently pudchased 2016 Focus St line in impact blue.  I was looking for siggestions on interior and exterior upgrades or mods that i could do.

heres what i was thinking:

1 - foot well lights.  i know the st3 comes with footwell lights but can you buy the component from ford and fit it on the st line? im aware there is a cable in the footwell that you can connect these too but is it live? 

2 - front splitter. im not sure if this will look silly or not as the car looks pretty already. has anyone done this? 

3 - wind deflectors 

4 - upgrade headlight bulbs to xeon 

5 - mudflaps. Not too fussed on the "rallyflapz" is there genuine ford moulded ones for sale anywhere?

any other suggestion

if people could post pictures of their st lines on here thay would be great