Ferdinand, thanks for your kind comments

As for the lights, details below:
Time - i must have put 15-20 hours plus in easily but you could probably do it in 8-10. There is alot of putting together, fitting to car, checking alignment, dismantling, adjusting, putting together again etc... so its pot luck on how long, patience is required..
Cost
-Spare set of headlights £150-£200 from ebay
-Custom brackets off bimmerforums.com for £75 shipped
-Full Stage III kit from theretrofitsource.com including projectors, HID's, ballasts, wiring harness, resealing glue etc.. - £260~ with the group buy discount I managed to catch onto. You could probably purchase these parts for less but the brackets require FXR-1.1 projectors only to fit - you can get them on their own via ebay for $100~
You can also do without the brackets but it will increase difficulty & labour time significantly. The brackets are a very robust solution.