I have 2 questions about the upgrade I am thinking of doing on my AGU which currently has a 007, air filter and map.
Before anybody says... I have read pretty much every thread on every forum

However, a lot of them are old and want to make sure that I am getting right stuff as people might have found out that certain things are not as good to use as others.
So my questions are:
1) How much would it cost (roughly) to do it all sourcing pretty much all used parts and then a map?
2) Am I missing anything from the list below (still possibly a little confused after reading threads) or any special specific recommendations?
02x turbo with water and oil lines and gaskets
fmic with 2.5" piping?
k04 manifold
3" downpipe/decat or 3" turbo back exhaust
k04 TIP
4 bar fpr
fuel pump from tt
injectors (from 225 cupra/tt/s3?)
MAF from tt or vr6?
Thanks in advance!