One psychedelic/psychoactive drug is not like another - not necessarily better or worse, just different. You may well be shocked by the degree of difference; I'd rather not resort to cheesy analogies because they're likely to create unhelpful preconceptions.

If you do experiment, avoid the enthusiast's trap of trying to sample as many different cocktails as you can. Whether it's a maturity or a cultural thing, there are many temptations to 'max out' on the intensity of the experience, which I think are unhelpful.

As for the therapy aspect, it's wiser to dose with an experienced person present who can help you if you feel distressed, but if a therapist is proposing to script the whole trip then it won't really be 'your' trip any more.