I'm not dissing MAOIs, except to our less thorough researchers in the viewing audience, and those who think you can microdose an MAOI metabolite in the form of levo-amphetamine, while currently taking dextro-amphetamine, and expect anything other than adverse events from the MAOI and dopaminergic stimulants combining in your brain.
I would point out that you should be able to just eat your neutral pH acetylated blood of Teonanacatl like a common Aztec. I don't know why a 4-sub makes MAO's blind to what is otherwise instantly recognized as a plant alkaloid not meant for brains (you know, proof of why eating food doesn't kill us all with all the monoamine precursors in a cheeseburger; save your money on 5HTP and DLPA kids, it's pointless).
And sure, acetylating takes away that water-friendly 4-OH, but you forget that big old nitrogen on the tail, more than happy to take on a proton, get charged, and fall in line with its aqueous milieu on their way down your throat. If you start with a freebase, you'd need some acidifiers, as discussed in a meth bong thread, and being OD, surprisingly few questions about doing that very thing with heroin.
Why stop with the AcO, why not take MAOIs with 4-OH? If you lived without major adverse reactions how much longer would your trip be, all the way to 24 fucking hours? No mortal should face God-as-a-four-foot-Mario-Bros. Character (I have seen Him) for that long.