A couple of things--How many standards can you attach to a full via a splitter?--
Or are you better off looking at something different going that route?
Are they upgradeable via Ubuntu, or do you have your update ppas installed to supersede them?
If Ubuntu updates, will it break the system?
Since the hash power is so low, will these be hardware upgradeable when a future version release becomes available, instead of just throwing them out?
You can run the node and mine at the same time, right?
Never dealt with asic, which is why I ask.