Thanks for the detail, that helps. I think you've got a map for 3 solid cities, maybe a fourth. The lack of CSs is still a big strike against, and dipshit neighbors don't help either. No jungles for bonus science, but maybe getting GBR early makes up for it (yeah, it probably does).
I guess I could be convinced to go either way on this...
If you're going to play out the save...I think you know what to expect: war in Akkad. I don't know how they are at Emperor, but I'm almost certain Boudicca will expand into Akkad's sphere of influence. Theo I'm not so sure of, in all the games I've played with her as a neighbor, she's expanded away from me.
(Do you know if Theo's on a coast? That might be something to keep tabs on: I know Byzantine gets those early ranged UU boats. I've never really encountered her when I've played Islands. Anyhow, she could take the fun out of the GBRs if she rolls up on you with those ships.)
If you're going to restart the save...build on what you know about the map and move the Akkad settlement up to go for the Petra. It might be a fun, bold move, it doesn't take you off your tech path, and it livens things up with Theo. It'll definitely be a way of establishing the frontlines with Theo, and you can just let Boudicca do what she do, she'll be a non-factor. It also groups your civ more nicely, which makes defense a lot easier.
I could go either way, but I still lean to reroll, just because goddamit. That's not fair taking the CSs out of things. I like having them around, they're my pals.
EDIT: Just saw your latest screen grab. Boudicca's going for Theo. It's going to

with your diplomacy, because it makes DOFs contentious from here on out. Also note a point against the kinda-isolation mode, which is that you want Research Agreements if at a possible. Here, even though you've got neighbors, because they hate the shit out of each other, you'll have a tough time doing better than one DOF and active Res. Agreement. The Petra city would've been more interesting with Boudicca and Theo slugging it out.