Replace the standard non Bose speakers

Been searching this forum but could not find all i am/was looking for.
Hopefully you can help me out, thanks in advance

2011 Audi A3 Sportsback 1.6 TDi 5 door (non Bose) (Replaced Concert2 plus for a MK2 RNS - E)
I would like to buy speakers to replace the standard non Bose once and make use of the existing wiring.

Already ordered and received 2 pairs:
Audi A3/S3 8P 2003-2012 MDF front speaker adapters 6.5" from AndyMac


Questions:

MK2 RNS - E Output (watts & ohm)?
Standard non Bose integrated back speaker & sub amplifier (watts & ohm)?
Standard non Bose Audi A3 speakers (front, back, sub) (watts & ohm)?
Are there separate crossover's used with a standard none Bose setup?
Maximum mounting depth front, back?

Where would you place the crossovers (front)
Where would you place the crossovers (back)

Grtx Rain...

Hi ladies & gents,

Does anybody know using the MDF door adapters for speakers with a depth from wall 66mm (2.6") will fit the 2011 A3 sportsback 5 doors front and back.

Thanks,
Rain....