Now we're definitely going to have 10 pages of discussion before Sis plays the next round.
Seriously, while this may be Emperor, moving the Settler 1N may not be a bad idea. You might be a couple turns behind the AI civs, but with the Corn and Pigs for growth and the Stone for hammers, you should be able to gain some ground back with that food and hammers.
I would think that you would be OK given that situation. If you weren't thinking about building Stonehenge, then it would simply be an issue of moving back to the original spot and settling in place.
With that being said, given that you need Agriculture somewhere, and that you've got a site that would allow for plenty of whipping, meaning BW goes higher up the list, you probably do need to go a different direction, regardless of whether you go back to the starting spot or you move to get all three resources in the BFC.
But as far as tech goes, I'd go the Ag-AH route, and if you decide you want the stone in the BFC and you want Stonehenge, then go for Masonry. If not, head to BW so you can do some whipping.
I'd still try to work in Archery, though, particularly if you go back to the original starting point. You might have some land to the east that could have Copper, but it's not a guarantee.