Stroker kits are cheap now, i say you go with a 347 right off the bat with a set of TW 205's you'll make easy work of splitting the block if you want to.
I'd like to, but when I go stroker, it's going to be aftermarket block, and I'm REALLY trying to keep the budget for this build under control, haha. Besides, I'd love to make 350ish to the tires on the stock bottom end for bragging rights, if for no other reason, haha. Run it like that for maybe a year or two, build a 363, swap the parts over, run a wilder cam, and gun for maybe mid 400s at the tire.