I once took ackee seeds from JA to Cambodia in an effort to introduce it to the country. Everything was going well, seeds were sprouting, and I had to leave town for a week on a business trip. I trusted a friend to watch the ackee seedlings for me while out of town, and came back to a bunch of dead sadness. Here in Suriname ackee can't be found either, and yet we are so close to JA.
Man that is sad- Cambodia and Suriname have the kind of weather that ackee would totally thrive in. Give it another try man.