As a general rule, using existing mechanisms always beats setting up a new program. For the six-week rollout for CERB, based on recent experience with the federal government, including the way it has failed to pay its own employees, it would be optimistic to say that it would be up and operational. Remember, too, that the federal government is largely operating from home now or remotely. It's going to be very difficult to set up a new program.
Using existing programs, or using existing channels such as banks, would prove to be a better way of getting much-needed help to businesses as fast as possible—and I'd underline “fast”. A lot of these small firms simply don't have the wherewithal to survive, sometimes not even a month.