lol, okayyyy then let's sort out what you want

first you said Delaware in order to breed your own meat birds. If you want to breed your own meat birds high quality Delaware are a good choice for that, there are many other choices as everyone will take the chance to point out, but high quality Delaware are a very good choice.
then . . . you said you didn't want CX because they grow to fast, great Delaware still look good for you.
then somewhere in there you said you wanted meat birds ready in 8-12 weeks . . . sorry unless you want scrawnys CX will be your only bird that really qualifies as a nice table bird in that time frame; so there you have a decision, fast or slow meat.
then you said you wanted birds that would forage for most of their supper. Now your back to a good heritage breed like Delaware, but again they won't be standard table size in that time frame and especially not by mostly foraging; so there you have another decision, forager or not.
CX are extremely difficult to hatch eggs from, not impossible but it's difficult even for those with a lot of experience . . . something to think about.
Then you mentioned .50 a chick whoops . . . that's a whole 'nother ball park! Those are leftover laying breed roo chicks, sure you can eat them, and they will forage for their supper but your looking at a 1-1.5 lb carcass in the time frame your mentioning and a WHOLE LOT of crowing before they are truly any mentionable butchering size.
So here's my advice: if you want purely meat in a fast time frame get yourself some CX and give it a go, their not as bad as some folks make them out to be, the meat is great & the time frame is fabulous but you have to feed them A LOT.
If you want to enjoy your birds; eat their eggs, breed for meat and layers, watch them forage and get to know them as pets, get yourself a nice heritage like Delaware. Skip the number one beginner mistake and don't buy from a hatchery, get some quality eggs on here and hatch them yourself.
OR option three

get to know some of us on here who are breeding our own meat breeds for fast growth & sustainability and beg for eggs, then work on your OWN meat breed specifically bred for the woods of Washington!
hope you don't mind the length lol!