You do mean AMT and not 5-MeO-AMT, right (because I remember you mentioning 5-MeO in another thread, at least I think that was you). AMT is one of my favorite drugs, it's a beautiful thing. I actually enjoy it alone, but I enjoy it more with a close friend. I would plug it (take it rectally)... it reduces the bodyload significant, and makes the come-up quicker and easier, and slightly reduces the dose. I'd start with 35 or 40mg. I have never found it visual except that it makes colors very beautiful and gives a fuzzy haze to everything, but some people experience true visuals. It feels similar to MDMA but also trippy, and it's MUCH more clear-headed and "real" feeling. It makes my mind go very fast and I can talk quite well and want to talk a lot. At higher doses it can get a bit fuzzy in the brain and you'll be able to talk less well, but you'll really enjoy doing it. It lasts a long time, but the trailing off period is quite a bit shorter if you plug it.
Some people don't want to go the rectal route, but it's really not so bad, and it's worth it for many drugs, especially psychedelics, because it generally reduces bodyload significantly and for many substances, like the 2C-Xs, it cuts the dose in half. AMT is good orally too, but the bodyload is significantly more intense and the come-up can feel very intense and unpleasant, and you tend to get nauseous. The come-up period is difficult for many psychedelics, it's almost like you have to pay the price to have the experience, but the nice thing about psychedelics is that the come-down and aftereffects are usually nice and you end up feeling better than before you tripped (as opposed to most drugs where you feel worse after). But plugged, the come-ups are easier for most things.