personally i would start with shrooms in a medium dose just to get the nature of what psychedelic head space is because and acid can be a bit too potent, especially if its a first time for you. if you u feel bad vibes from the mushroom, you can just fill you stomach with carbohydrates and suger as it kills potency dramatically.

it usually only lasts up to hours with a 3 hour peak
acid is another world and the peak can last strong for 7 hours and over 24 hours of after effect and eating wont kill the effects, and therefor so i suggest testing the water with shrooms first

i would also suggest if your going to do acid, you wait at liest a month before taking it again as i dosed every three days to a week and now have hppd

it is one of the most potent psychedelics known in dose wise (similar substances are DOB, 5MEO AMT, DOI) and there are even reports of hppd from one dose, im not trying to scare you im just sayiing you have to be more careful than with shrooms, and dont go crazy on it as it could do irreversable damage