I beleive there is *many* more acacias worth looking into. Considering that DMT is a fairly new phenonomen in Australia (as far as history can account ) and that there are literaly thousands of species of acacia with only a handful or two being tested so far! The chances are good!       Also I beleive it is a bit of a myth that Psychotria seed is hard to germinate. If the seed is fresh the success rate is IME around 90+%  That goes for viridis and carth. It might take a few months before they germ but it is worth while.