hmm strange. i found it to be extremely visual with less of the shroom mindfuck. it may have been a different compound sold as 4-aco-dipt, but it definitely felt like a 4-sub tryptamine
the dosage for 4 HO dipt in TiHKAL is 15-20 mg, and i believe the ACOs are less potent generally. i bet 20 mg is a decent place to start.
I have some 4-ho-dipt I have been planning to try for a while but haven't gotten around to it yet. Apparently 4-aco-dipt is very similar but lasts a little longer, and may have 2 peaks instead of just one. There might be some minor aural alterations at higher doses. 20 mg would probably be a good starting dose. I might start with 30 mg for 4-ho-dipt but that's only because I seem to have an unusually high tolerance for most psychs, with the exception of DMT, which is intense as hell!