So I joined the club over Christmas, went from a Mk5 TDI to a 2011 Mk6 GTI, and boy what a difference! I've been absolutely in love with GTIs for years and can't believe I actually own one myself now

I've been browsing the forum trying to pick up on advice others have had but thought I'd introduce myself here.
Looking at aesthetic changes I eventually want new alloys (looking at the BBS SR) and xenons but obviously a lot of money to drop in one go, especially after getting the car itself!
First thing I want to do is get some Halogen bulbs to replace the standard which I believe are H7. I was looking at the OSRAM Nightbreaker, thoughts or other recommendations? is it worth replacing the H15 also? thinking of doing this until I can drop the money on xenons.
I was also looking at getting the LED replacement kit for the interior lights, where's the best place to find these kits, ebay?
Finally, are there any other relatively cheap aesthetic mods that you guys/gals can recommend?
Thanks!