I really think you're overwhelming yourself with all this equipment. Just stick with one controller, you don't have to spend all your money at once.
And this is only FURTHER reinforcing my belief that you still don't know what the audio card is used for... The Studio4A already has a built in audio card.Quote:
[1.
Cmd Studio4a-200
Audio 6 -300
ipad- 500
=1000$]