It depends some on your ability to recover. I'd try the programs as written (or developed by you) at whatever levels are appropriate and see how your recovery fares for a couple of weeks. You don't want to go hard now and then fall off hard in a few weeks. 1900 calories should give you good weight loss without extra HIIT that could break you down. If you have the time for it 30-60 minutes of walking might do as well.
But that's just my opinion. I'm sure others might have different insights.