My bad with the heights
I was writing that in a hotel in a hurry before departure on a foreign keyboard. Thought of it as I left, but had no time to correct it.
Should have said that in
my operation the destination fuel only procedure isn't really used in practice. The only destination it is worth it is Madrid (many runways, long diversion distances, for Europe at least). The TEMPO at 100 feet as I stated above is an Ops Manual thing, other operations may differ (as yours obviously does). As our operation is in Europe, it must therefore be acceptable to disregard it - your operation doesn't, and applying a higher standard is fine.
In Aus, CAR 257 is little understood. Most would plan to fly there, and carry an alternate.