As with any such maritime scheme; (The Russians try this presently.) one must look at the fighter/radar coverage.
Evasion routing and low/low/low flight profiles to avoid surface based allied radar, aboard ships and on land could chop those numbers in half.
Now some questions can be asked with this additional planning information:
1. Can Junkers, Dornier, and FW allocate sufficient resources to meet the numbers speculated?
2. Will the Allies allow it? They have a bombing campaign in progress.
3. Will the Allies allow it? The antidote in the mid Atlantic is the F4F Wildcat. Plenty of those available.