1/ Don't bother with the stems there is no good stuff in them....just wasting precious space.....just use very well mashed up pods...the seeds also have little or no good stuff, but they do alter the taste of the final 'brew' so I suppose its a personal prefrence.
2/ Heat your pods and water to 70 Deg C - I would advise you to use a water bath method to heat your mixture and buy a cheap "candy thermometer" from e-bay or wherever (5 bucks or so) [Otherwise you just can't guess it on some old stove, so a thermometer is req'd really] - Yes if the Temp goes above 82 Deg C then all morphine is destroyed. - and it's not easy to guess what the temp of the 'mix' is accurately, especially as it's sat in a bath. - At this point you aren't wanting to cook off excess as the heat would destroy it.... so this step is just involved in getting the good stuff from the pods into your water.
have kept it at 70 C and stirred for say 1/2 hr or longer.
3/It is a good thing to filter the solids out while still hot as heat expands, so the filter should remove slightly more than if filtered cold - But i'd guess it's not going to make a huge difference. so I leave up to you. - Either way let the solution cool then check the Ph when at room temp and adjust if req'd - you can use a weak Citric acid solution to lower Ph and you are aiming for a value of 6.5 at room temp.
4/ Poppy seeds bought from store are wrong type as far as I know.... You need Papaver Somniferum poppy heads/seeds as only that variety has your Morphine/Codeine/Thebaine goody's in, but as I said the seed have only trace amounts..... It's hard to tell seeds apart with naked eye but can be done with a decent camera or microscope - The seed of Papaver Somniferum has a 'lattice' or net like structure when seen close up.
5/ I suggest you take it very easy at first, take minimal dose and i'd also suggest starting with Tea at first....
6/ in fact if you haven't taken opiates before, I would start with small amounts, and i'd also suggest you make Tea at least for now.....Not the best tasting tea you will have tasted, but the path from liquid pod juice to Opium is very time consuming and a frustrating task that you may never attain to satisfaction.
7/ This I must say though....It may seem quite innocent at 1st but remember it's a drug that is not forgiving, what gets you high today will not do same tomorrow unless you increse dose and make no mistake that you CAN and will
get a bad habit and the same monkey on your back as someone taking Heroin........same road steeper hills thats all.....................
Only way you can stay safe is to keep the doses far enough apart that you aren't increasing the doses....Sounds so simple doesn't it ?
Take care people.....