So I am going to do this job using an independent local mechanic whom I trust (I live in Hungary). The mechanic can source the parts or I can (same price for labour).

I want to be sure to get the same manufacturer of parts as the Audi OEM ones, but without paying OEM prices, and so would like to order them myself (since the guy won't charge more if I bring my own).

But I am not sure which these are when ordering online.

I believe that for most of the timing belt kit parts either Contitech or Ina, depending on which is available, is that correct?

And for the waterpump, should it be Valeo or Bosch?

These I believe are the part numbers for the BDH engine (132 kW), mandatory replacement at timing belt change:

059 109 119B
059 130 113A
059 109 243J
059 109 487C
059 109 244B
059 109 479B
059 109 243L
059 121 004 EX

My mechanic also said he would replace any of the following parts but only if worn out:

059 122 303
059 145 276
059 903 137H
059 903 341J
059 145 271
059 260 849D
059 260 523B
059 145 284B