I haven't read much into
PH's connection to
AoL, so I have no idea if what you suggest is credible.
Whilst I haven't spent the time plotting out my own timeline to the minutest detail, It seems likely to me that the Four Swords series follows after Wind Waker on the Adult Timeline for a number of reasons, some of which you've mention, but also things like ge0graphy and the history presented in Four Swords and Four Swords Adventures.
However, whilst I do beleive in the connection, I don't think that the Triumph Forks is strong enough proof; Whilst yes, It was a nod to Wind Waker, it's canon status is suspect.
The races you mentioned seem less than conclusive also; simply being similar is not proof that they are one in the same or even connected in any way.