In my eyes 250 isnt too high, if youre ready for it and you know it will be intense I think i would want my first time (which will always be the best time) to be really good.
250mg wouldn't be really good and especially not for a first timer. I'd imagine an extremely anxiety-ridden comeup full of sweating, confusion and worry. Then a flooring peak that is just too intense to really enjoy when you've never experienced MDMA. As it tails off i'd imagine they could actually enjoy it - thats what i've experienced with higher doses. I gave my friend 120mg his first time and he found it too intense - hes a 6ft, 85kg guy. Just suggesting 250mg is not only more dangerous but also less enjoyable in my opinion. Less is more with MDMA, 80-120mg of unadulterated MDMA is perfectly sufficient to have a 'really good' time. I'd even go as far as saying 60-80mg is fine, i'm pretty sure my first time was near the 60-80mg mark and it was incredible. I was naive and never tested it or weighed it however.
