You sound like you're springloaded to ditch. You've already indicated that you want to fly down to 1,000 and stay there, ready to ditch, but that if you find it was a false alarm, then you'll climb back to altitude and continue on your way. You've got fuel for that?
There is zero advantage to loitering at 1,000. Fuel burn is higher. Fire activity is more aggressive. True airspeed is slower. You're making slower progress toward a boat, island, ETP alternate, or whatever.
If you're made the decision to ditch, you've made it at altitude, and you're not going to dive to 1,000', run checklists, evaluate, think about it, see if it's a false alarm, then ditch. If you truly need to ditch, you're going to be ditching from FL350; you're going straight there and ditching. Or you're going to 250 and making a beeline for your ETP alternate, then ditching from 250 if it becomes necessary.
If you go to 1,000, it's not a matter of sorting it out, seeing if it's a false alarm, then pressing on when you decide it wasn't so bad after all. If it wasn't so bad after all, you should never have gone there, period. If it is so bad, you're going straight there from altitude, and it will go fast.
I'm not sure why you keep posting the same question again and again, and saying let's discuss it (again). I'm having a hard time understand why you'd try to do these things.