Advice required...

[Timo]

Yes, but whwhwwhwwhwhhwh hww whwh whw why would you buy a Fireface when you don't need all the inputs?!

Aren't there decent-sounding soundcards that have just four (or so) top-quality inputs, or whatever?

Maybe have a look here: http://www.lynxstudio.com/

Buying the Fireface, in your case, you'll probably be spending a lot of money on the different technologies that you'll never likely use. The Fireface is a multi-channel audio interface, for interfacing with the real world. - That's its role. I suspect it might possibly be best to use that same amount of money on fewer, but super-high quality ins/outs?

How many analogue inputs/outputs would you need?
How many digital inputs/outputs would you need?
Do you need Mic-Pre's?

Think about any possible future needs, too.

etc...