Thank you for your reply!
As much as you said so, I could go ahead and not pick out a new RAM stick 
It's because of the problems here. I tried using a different approach from the feature classifier plugin trying to see if the results would be better. Of course in response to this issue it's likely that it's happening at the dada2 step, but I'll continue to reply under that issue page.
Only classify-sklearn can succeed. But I'm not sure why. Is it because his requires less arithmetic, or takes up less memory?
Meaning I use the data provided here to run the commands I have here where the kills occur? I'll try that right away, that's a great suggestion, thanks! I'll reply later with the results.