I would record to both systems, the QU-Drive serving as a backup.
Make sure you have enough space on the HD (and/or USB sticks) and make sure you set the input gains correctly, as you don’t want any overloads!
I also would test the reliability of the recording medium (or media) by letting it run for the intended recording duration – you can just record silence if you want – just to make sure you don’t get any errors due to buffers overload or speed USB stick deficiency.
Harerton