No clue. You'd probably end with with some kind of 4-HO-5-MeO substituted tryptamine, but I have no idea how the enzymes  would treat the acetyl group.

If you could cleave the acetyl group from the amine, you could get 5-MeO-tryptamine, and if you fed THAT to the mushrooms, you could probably end up wiht 4-HO-5-MeO-DMT (assuming, of course, that the pathway is Tryptamine -> oxidation -> 4-HO-Tryptamine -> methylation -> 4-HO-N,N-DMT).

If that's possible (and all of this is, in fact, true), that sounds to me like the most cost-effective rout towards 4-HO-5-MeO-DMT)