mushrooms can be just as "strong" as DMT ime, there different compounds that have different effects. both are tryptamines though.
16s quite young imo but i started when i was young, 16 actually i had vaped 25mg of dmt, very nice experience, went very fast, clean though i really enjoyed the stuff, ime salvia makes me more uncomfortable. mushrooms were my first trip lasting hours at a time, very lovely experience i recommend fungus first really but its my opinion. ime its better to do alot of research and be safe about it to. if you try some psychedelics start at low dose's and work your way up see how you react to them and make sure your getting what your looking for theres tons of people out there getting ripped off with random research chems. iv been taking them for years and i still take baby steps with psychedelics, its best to take it slow theyll always be there and youll always have time to trip.
tripping in a safe environment would be best make sure no one will be around bugging you alot it can push you into a negative mind state ime. make sure your gonna be free and safe for the entire duration of the trip. also make sure you have a proper weighing device for what ever your consuming imo its important to know how much your dosing.
also your going to have more than visuals in alot of experiences, youll be thinking mentally in different ways than usual its quite interesting imo, at first i was in love with the visuals and then after time i have liked the different mental headspaces i can get with psychedelics, still love the visuals though there the icing on top of the cake imo.