Considering the OP - for OEI 1000ft and AEO 800ft, there are too many variations to be specific.
However, presuming that the AEO thrust cut doesn't involve flying level (and, apart from cloud chasing (or coastal pax scenery viewing - maybe folks don't do that anymore ?), I can't see why one might want to do that - an ATC level restriction at 800ft is not all that likely to occur, I suspect), and an initial AEO climb at, say, 10%, one needs only an average climb of around 0.4% to keep above the gross profile at WAT limits from 800ft through 1000 ft.
Now, while one should do the sums for a specific Type and operation, it is UNLIKELY to present a problem for the aircraft's flight path terrain clearance during that delta. Indeed, the terrain clearance sums are much more conservative than most pilots might presume as the calculations for terrain clearance put the calculated aircraft height on the NFP substantially BELOW 1000ft.
The commander really has a few more important priorities than this sideline "interesting" consideration ..