Good luck finding a community sourcing on the clearnet - I think it would be worth just learning how to access the DNMs. You don't really necessarily need PGP anyways, it's more for "future" safety. I guess it does matter if you're not planning on using it instantaneously.
Some people can find the product on foreign sites, uncertain about legitimacy of them though.
I know how you feel - though in my area we don't really have druggies IVing - it's more of a smoking/snorting kinda place. There are guides online about IV but it's probably more of a learn from experience thing.
I definitely think it'd be peaceful. I'm just unsure as to quantity required via different routes. Look up routes of administration, it's rare for them to mention oral administration - and when they do, they mention that "it's entirely metabolised during first-pass metabolism into Morphine - before crossing the blood-brain barrier; so the effects are the same as orally administered morphine."
Source
(I'm assuming F & Eto work similarly to H).
I'm not sure what this changes about the method if anything - but I can assure you that if it has the effects of orally administered morphine it would feel good.
I'm just wondering whether orally is a good idea - I'm not sure if it causes vomiting. The strength would suggest that it would still work. Snorting would be an addition for me just in case. Uh, also, I'm not sure if you'd be able to reach the other cup if you did vomit. Even on multiple pills of strong morphine it can just get rid of the will to move - and I've not tried H let alone Eto.
It would also probably remove the whole natural double take reaction, you'd be much calmer and, if you wanted to, you could probably make it all to be a pleasant experience, as you should.