I’d ditch the BCD 3000
Based on my experience of one back before I invested in my Allen&Heath 4D back in 2008, the build quality is rubbish. One of the jogs (left I think it was) was grinding upon usage.
plus the fact it isnt a proper full soundcard in it… all it does is use the internal mixer of the sofatware you use on the computer.
It consumes more computer CPU than an external mixer based controller.
Have you got a tablet that you can use as a controller using TouchOSC?
although that would need an external soundcard.
might be better if you can to look at hiring or borrowing some hardware from someone / somewhere?
till you can make an investment in something that is better.
unless you make a quick purchase, but taking the time to consider the options is best.